Finding the Fourth Proportional to 72,542.90, 99,944.53 and 56,133.69

Step by Step Solution

1. Step 1: Write the proportion equation
   72,542.90 : 99,944.53 = 56,133.69 : x
2. Step 2: Convert to fraction form
   72,542.90/99,944.53 = 56,133.69/x
3. Step 3: Cross multiply
   72,542.90x = 99,944.53 × 56,133.69
4. Step 4: Simplify right side
   72,542.90x = 5,610,254,733.69
5. Step 5: Solve for x
   x = 5,610,254,733.69/72,542.90
6. Step 6: Final answer
   x = 77,337.06