Finding the Fourth Proportional to 98,150.72, 135,447.36 and 53,438.72

Step by Step Solution

1. Step 1: Write the proportion equation
   98,150.72 : 135,447.36 = 53,438.72 : x
2. Step 2: Convert to fraction form
   98,150.72/135,447.36 = 53,438.72/x
3. Step 3: Cross multiply
   98,150.72x = 135,447.36 × 53,438.72
4. Step 4: Simplify right side
   98,150.72x = 7,238,133,545.78
5. Step 5: Solve for x
   x = 7,238,133,545.78/98,150.72
6. Step 6: Final answer
   x = 73,745.09