Finding the Fourth Proportional to 56,507.50, 77,980.14 and 31,014.30

Step by Step Solution

1. Step 1: Write the proportion equation
   56,507.50 : 77,980.14 = 31,014.30 : x
2. Step 2: Convert to fraction form
   56,507.50/77,980.14 = 31,014.30/x
3. Step 3: Cross multiply
   56,507.50x = 77,980.14 × 31,014.30
4. Step 4: Simplify right side
   56,507.50x = 2,418,499,456.00
5. Step 5: Solve for x
   x = 2,418,499,456.00/56,507.50
6. Step 6: Final answer
   x = 42,799.62