Finding the Fourth Proportional to 68,508.72, 102,300.03 and 56,053.08

Step by Step Solution

1. Step 1: Write the proportion equation
   68,508.72 : 102,300.03 = 56,053.08 : x
2. Step 2: Convert to fraction form
   68,508.72/102,300.03 = 56,053.08/x
3. Step 3: Cross multiply
   68,508.72x = 102,300.03 × 56,053.08
4. Step 4: Simplify right side
   68,508.72x = 5,734,231,765.59
5. Step 5: Solve for x
   x = 5,734,231,765.59/68,508.72
6. Step 6: Final answer
   x = 83,700.76