Finding the Fourth Proportional to 172,839.34, 238,468.62 and 112,498.78

Step by Step Solution

1. Step 1: Write the proportion equation
   172,839.34 : 238,468.62 = 112,498.78 : x
2. Step 2: Convert to fraction form
   172,839.34/238,468.62 = 112,498.78/x
3. Step 3: Cross multiply
   172,839.34x = 238,468.62 × 112,498.78
4. Step 4: Simplify right side
   172,839.34x = 26,827,428,818.28
5. Step 5: Solve for x
   x = 26,827,428,818.28/172,839.34
6. Step 6: Final answer
   x = 155,215.99