Finding the Fourth Proportional to 151,630.52, 209,182.46 and 87,931.40

Step by Step Solution

1. Step 1: Write the proportion equation
   151,630.52 : 209,182.46 = 87,931.40 : x
2. Step 2: Convert to fraction form
   151,630.52/209,182.46 = 87,931.40/x
3. Step 3: Cross multiply
   151,630.52x = 209,182.46 × 87,931.40
4. Step 4: Simplify right side
   151,630.52x = 18,393,705,077.67
5. Step 5: Solve for x
   x = 18,393,705,077.67/151,630.52
6. Step 6: Final answer
   x = 121,306.09