Finding the Fourth Proportional to 123,434.42, 170,342.61 and 75,714.08

Step by Step Solution

1. Step 1: Write the proportion equation
   123,434.42 : 170,342.61 = 75,714.08 : x
2. Step 2: Convert to fraction form
   123,434.42/170,342.61 = 75,714.08/x
3. Step 3: Cross multiply
   123,434.42x = 170,342.61 × 75,714.08
4. Step 4: Simplify right side
   123,434.42x = 12,897,334,000.95
5. Step 5: Solve for x
   x = 12,897,334,000.95/123,434.42
6. Step 6: Final answer
   x = 104,487.34