Finding the Fourth Proportional to 56,579.68, 78,080.18 and 31,088.10

Step by Step Solution

1. Step 1: Write the proportion equation
   56,579.68 : 78,080.18 = 31,088.10 : x
2. Step 2: Convert to fraction form
   56,579.68/78,080.18 = 31,088.10/x
3. Step 3: Cross multiply
   56,579.68x = 78,080.18 × 31,088.10
4. Step 4: Simplify right side
   56,579.68x = 2,427,364,443.86
5. Step 5: Solve for x
   x = 2,427,364,443.86/56,579.68
6. Step 6: Final answer
   x = 42,901.70