Finding the Fourth Proportional to 118,839.75, 164,000.15 and 65,123.61

Step by Step Solution

1. Step 1: Write the proportion equation
   118,839.75 : 164,000.15 = 65,123.61 : x
2. Step 2: Convert to fraction form
   118,839.75/164,000.15 = 65,123.61/x
3. Step 3: Cross multiply
   118,839.75x = 164,000.15 × 65,123.61
4. Step 4: Simplify right side
   118,839.75x = 10,680,282,034.64
5. Step 5: Solve for x
   x = 10,680,282,034.64/118,839.75
6. Step 6: Final answer
   x = 89,871.29