Finding the Fourth Proportional to 100,359.34, 138,483.17 and 55,025.40

Step by Step Solution

1. Step 1: Write the proportion equation
   100,359.34 : 138,483.17 = 55,025.40 : x
2. Step 2: Convert to fraction form
   100,359.34/138,483.17 = 55,025.40/x
3. Step 3: Cross multiply
   100,359.34x = 138,483.17 × 55,025.40
4. Step 4: Simplify right side
   100,359.34x = 7,620,090,854.98
5. Step 5: Solve for x
   x = 7,620,090,854.98/100,359.34
6. Step 6: Final answer
   x = 75,928.07