The financial sustainability of hospital networks is increasingly reliant on data-driven tools that offer precision in forecasting and operational oversight. Predictive analytics systems have emerged as essential components in modern healthcare financial management, enabling hospitals to anticipate cost fluctuations, optimize resource allocation, and improve overall fiscal responsibility. This review explores the application of predictive analytics in enhancing financial forecast accuracy and enabling real-time monitoring of economic activities within hospital systems. It evaluates the integration of machine learning models, real-time data streams, and decision support systems that facilitate proactive financial planning. Furthermore, the paper examines how these systems support dynamic budgeting, risk mitigation, and reimbursement optimization while addressing the challenges of data quality, interoperability, and algorithmic transparency. By assessing case studies and recent technological advancements, this review highlights best practices and outlines strategic pathways for adopting predictive financial models to strengthen hospital network resilience in an evolving healthcare economy.