Finding the Fourth Proportional to 56,881.32, 78,498.63 and 31,730.82

Step by Step Solution

1. Step 1: Write the proportion equation
   56,881.32 : 78,498.63 = 31,730.82 : x
2. Step 2: Convert to fraction form
   56,881.32/78,498.63 = 31,730.82/x
3. Step 3: Cross multiply
   56,881.32x = 78,498.63 × 31,730.82
4. Step 4: Simplify right side
   56,881.32x = 2,490,825,898.78
5. Step 5: Solve for x
   x = 2,490,825,898.78/56,881.32
6. Step 6: Final answer
   x = 43,789.88