Finding the Fourth Proportional to 72,196.25, 99,600.64 and 56,253.02

Step by Step Solution

1. Step 1: Write the proportion equation
   72,196.25 : 99,600.64 = 56,253.02 : x
2. Step 2: Convert to fraction form
   72,196.25/99,600.64 = 56,253.02/x
3. Step 3: Cross multiply
   72,196.25x = 99,600.64 × 56,253.02
4. Step 4: Simplify right side
   72,196.25x = 5,602,836,155.30
5. Step 5: Solve for x
   x = 5,602,836,155.30/72,196.25
6. Step 6: Final answer
   x = 77,605.64