Finding the Fourth Proportional to 56,637.77, 78,162.12 and 31,146.08

Step by Step Solution

1. Step 1: Write the proportion equation
   56,637.77 : 78,162.12 = 31,146.08 : x
2. Step 2: Convert to fraction form
   56,637.77/78,162.12 = 31,146.08/x
3. Step 3: Cross multiply
   56,637.77x = 78,162.12 × 31,146.08
4. Step 4: Simplify right side
   56,637.77x = 2,434,443,251.68
5. Step 5: Solve for x
   x = 2,434,443,251.68/56,637.77
6. Step 6: Final answer
   x = 42,982.69