Finding the Fourth Proportional to 162,729.78, 224,565.62 and 91,111

Step by Step Solution

1. Step 1: Write the proportion equation
   162,729.78 : 224,565.62 = 91,111 : x
2. Step 2: Convert to fraction form
   162,729.78/224,565.62 = 91,111/x
3. Step 3: Cross multiply
   162,729.78x = 224,565.62 × 91,111
4. Step 4: Simplify right side
   162,729.78x = 20,460,398,203.82
5. Step 5: Solve for x
   x = 20,460,398,203.82/162,729.78
6. Step 6: Final answer
   x = 125,732.35