Finding the Fourth Proportional to 56,624.09, 78,139.25 and 31,130.27

Step by Step Solution

1. Step 1: Write the proportion equation
   56,624.09 : 78,139.25 = 31,130.27 : x
2. Step 2: Convert to fraction form
   56,624.09/78,139.25 = 31,130.27/x
3. Step 3: Cross multiply
   56,624.09x = 78,139.25 × 31,130.27
4. Step 4: Simplify right side
   56,624.09x = 2,432,495,871.88
5. Step 5: Solve for x
   x = 2,432,495,871.88/56,624.09
6. Step 6: Final answer
   x = 42,958.68