Finding the Fourth Proportional to 239,728.34, 359,499.02 and 89,886.98

Step by Step Solution

1. Step 1: Write the proportion equation
   239,728.34 : 359,499.02 = 89,886.98 : x
2. Step 2: Convert to fraction form
   239,728.34/359,499.02 = 89,886.98/x
3. Step 3: Cross multiply
   239,728.34x = 359,499.02 × 89,886.98
4. Step 4: Simplify right side
   239,728.34x = 32,314,278,973.83
5. Step 5: Solve for x
   x = 32,314,278,973.83/239,728.34
6. Step 6: Final answer
   x = 134,795.41