Finding the Fourth Proportional to 56,499.52, 77,970.17 and 31,005.44

Step by Step Solution

1. Step 1: Write the proportion equation
   56,499.52 : 77,970.17 = 31,005.44 : x
2. Step 2: Convert to fraction form
   56,499.52/77,970.17 = 31,005.44/x
3. Step 3: Cross multiply
   56,499.52x = 77,970.17 × 31,005.44
4. Step 4: Simplify right side
   56,499.52x = 2,417,499,272.70
5. Step 5: Solve for x
   x = 2,417,499,272.70/56,499.52
6. Step 6: Final answer
   x = 42,787.96