Finding the Fourth Proportional to 56,369.52, 77,789.88 and 31,219.02

Step by Step Solution

1. Step 1: Write the proportion equation
   56,369.52 : 77,789.88 = 31,219.02 : x
2. Step 2: Convert to fraction form
   56,369.52/77,789.88 = 31,219.02/x
3. Step 3: Cross multiply
   56,369.52x = 77,789.88 × 31,219.02
4. Step 4: Simplify right side
   56,369.52x = 2,428,523,819.52
5. Step 5: Solve for x
   x = 2,428,523,819.52/56,369.52
6. Step 6: Final answer
   x = 43,082.22