Finding the Fourth Proportional to 502,987.72, 754,481.78 and 123,915.82

Step by Step Solution

1. Step 1: Write the proportion equation
   502,987.72 : 754,481.78 = 123,915.82 : x
2. Step 2: Convert to fraction form
   502,987.72/754,481.78 = 123,915.82/x
3. Step 3: Cross multiply
   502,987.72x = 754,481.78 × 123,915.82
4. Step 4: Simplify right side
   502,987.72x = 93,492,228,443.76
5. Step 5: Solve for x
   x = 93,492,228,443.76/502,987.72
6. Step 6: Final answer
   x = 185,873.78