Finding the Fourth Proportional to 56,865, 78,473.70 and 31,714.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,865 : 78,473.70 = 31,714.50 : x
2. Step 2: Convert to fraction form
   56,865/78,473.70 = 31,714.50/x
3. Step 3: Cross multiply
   56,865x = 78,473.70 × 31,714.50
4. Step 4: Simplify right side
   56,865x = 2,488,754,158.65
5. Step 5: Solve for x
   x = 2,488,754,158.65/56,865
6. Step 6: Final answer
   x = 43,766.01