Finding the Fourth Proportional to 56,917.47, 85,436.33 and 31,978.83

Step by Step Solution

1. Step 1: Write the proportion equation
   56,917.47 : 85,436.33 = 31,978.83 : x
2. Step 2: Convert to fraction form
   56,917.47/85,436.33 = 31,978.83/x
3. Step 3: Cross multiply
   56,917.47x = 85,436.33 × 31,978.83
4. Step 4: Simplify right side
   56,917.47x = 2,732,153,713.00
5. Step 5: Solve for x
   x = 2,732,153,713.00/56,917.47
6. Step 6: Final answer
   x = 48,002.02