Finding the Fourth Proportional to 56,022.52, 77,310.69 and 30,872.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,022.52 : 77,310.69 = 30,872.02 : x
2. Step 2: Convert to fraction form
   56,022.52/77,310.69 = 30,872.02/x
3. Step 3: Cross multiply
   56,022.52x = 77,310.69 × 30,872.02
4. Step 4: Simplify right side
   56,022.52x = 2,386,737,167.89
5. Step 5: Solve for x
   x = 2,386,737,167.89/56,022.52
6. Step 6: Final answer
   x = 42,603.17