Finding the Fourth Proportional to 56,410.38, 77,851.78 and 31,259.88

Step by Step Solution

1. Step 1: Write the proportion equation
   56,410.38 : 77,851.78 = 31,259.88 : x
2. Step 2: Convert to fraction form
   56,410.38/77,851.78 = 31,259.88/x
3. Step 3: Cross multiply
   56,410.38x = 77,851.78 × 31,259.88
4. Step 4: Simplify right side
   56,410.38x = 2,433,637,300.59
5. Step 5: Solve for x
   x = 2,433,637,300.59/56,410.38
6. Step 6: Final answer
   x = 43,141.66