Finding the Fourth Proportional to 56,507.29, 77,981.05 and 31,016.04

Step by Step Solution

1. Step 1: Write the proportion equation
   56,507.29 : 77,981.05 = 31,016.04 : x
2. Step 2: Convert to fraction form
   56,507.29/77,981.05 = 31,016.04/x
3. Step 3: Cross multiply
   56,507.29x = 77,981.05 × 31,016.04
4. Step 4: Simplify right side
   56,507.29x = 2,418,663,366.04
5. Step 5: Solve for x
   x = 2,418,663,366.04/56,507.29
6. Step 6: Final answer
   x = 42,802.68