Finding the Fourth Proportional to 99,310.50, 137,048.49 and 54,598.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,310.50 : 137,048.49 = 54,598.50 : x
2. Step 2: Convert to fraction form
   99,310.50/137,048.49 = 54,598.50/x
3. Step 3: Cross multiply
   99,310.50x = 137,048.49 × 54,598.50
4. Step 4: Simplify right side
   99,310.50x = 7,482,641,981.27
5. Step 5: Solve for x
   x = 7,482,641,981.27/99,310.50
6. Step 6: Final answer
   x = 75,345.93