Finding the Fourth Proportional to 151,915.76, 209,645.95 and 83,934.31

Step by Step Solution

1. Step 1: Write the proportion equation
   151,915.76 : 209,645.95 = 83,934.31 : x
2. Step 2: Convert to fraction form
   151,915.76/209,645.95 = 83,934.31/x
3. Step 3: Cross multiply
   151,915.76x = 209,645.95 × 83,934.31
4. Step 4: Simplify right side
   151,915.76x = 17,596,487,423.59
5. Step 5: Solve for x
   x = 17,596,487,423.59/151,915.76
6. Step 6: Final answer
   x = 115,830.56