Finding the Fourth Proportional to 99,362.50, 137,122.41 and 54,650.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,362.50 : 137,122.41 = 54,650.50 : x
2. Step 2: Convert to fraction form
   99,362.50/137,122.41 = 54,650.50/x
3. Step 3: Cross multiply
   99,362.50x = 137,122.41 × 54,650.50
4. Step 4: Simplify right side
   99,362.50x = 7,493,808,267.71
5. Step 5: Solve for x
   x = 7,493,808,267.71/99,362.50
6. Step 6: Final answer
   x = 75,418.88