Finding the Fourth Proportional to 56,123.08, 77,446.58 and 30,972.52

Step by Step Solution

1. Step 1: Write the proportion equation
   56,123.08 : 77,446.58 = 30,972.52 : x
2. Step 2: Convert to fraction form
   56,123.08/77,446.58 = 30,972.52/x
3. Step 3: Cross multiply
   56,123.08x = 77,446.58 × 30,972.52
4. Step 4: Simplify right side
   56,123.08x = 2,398,715,747.98
5. Step 5: Solve for x
   x = 2,398,715,747.98/56,123.08
6. Step 6: Final answer
   x = 42,740.27