Finding the Fourth Proportional to 100,359.09, 138,482.82 and 55,025.15

Step by Step Solution

1. Step 1: Write the proportion equation
   100,359.09 : 138,482.82 = 55,025.15 : x
2. Step 2: Convert to fraction form
   100,359.09/138,482.82 = 55,025.15/x
3. Step 3: Cross multiply
   100,359.09x = 138,482.82 × 55,025.15
4. Step 4: Simplify right side
   100,359.09x = 7,620,037,112.95
5. Step 5: Solve for x
   x = 7,620,037,112.95/100,359.09
6. Step 6: Final answer
   x = 75,927.72