Finding the Fourth Proportional to 100,340.88, 138,472.02 and 55,023

Step by Step Solution

1. Step 1: Write the proportion equation
   100,340.88 : 138,472.02 = 55,023 : x
2. Step 2: Convert to fraction form
   100,340.88/138,472.02 = 55,023/x
3. Step 3: Cross multiply
   100,340.88x = 138,472.02 × 55,023
4. Step 4: Simplify right side
   100,340.88x = 7,619,145,956.46
5. Step 5: Solve for x
   x = 7,619,145,956.46/100,340.88
6. Step 6: Final answer
   x = 75,932.62