Finding the Fourth Proportional to 99,064.50, 136,711.42 and 54,352.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,064.50 : 136,711.42 = 54,352.50 : x
2. Step 2: Convert to fraction form
   99,064.50/136,711.42 = 54,352.50/x
3. Step 3: Cross multiply
   99,064.50x = 136,711.42 × 54,352.50
4. Step 4: Simplify right side
   99,064.50x = 7,430,607,455.55
5. Step 5: Solve for x
   x = 7,430,607,455.55/99,064.50
6. Step 6: Final answer
   x = 75,007.77