Finding the Fourth Proportional to 100,233.72, 138,317.22 and 54,902.88

Step by Step Solution

1. Step 1: Write the proportion equation
   100,233.72 : 138,317.22 = 54,902.88 : x
2. Step 2: Convert to fraction form
   100,233.72/138,317.22 = 54,902.88/x
3. Step 3: Cross multiply
   100,233.72x = 138,317.22 × 54,902.88
4. Step 4: Simplify right side
   100,233.72x = 7,594,013,731.59
5. Step 5: Solve for x
   x = 7,594,013,731.59/100,233.72
6. Step 6: Final answer
   x = 75,763.06