Finding the Fourth Proportional to 334,747.32, 502,120.56 and 85,429.32

Step by Step Solution

1. Step 1: Write the proportion equation
   334,747.32 : 502,120.56 = 85,429.32 : x
2. Step 2: Convert to fraction form
   334,747.32/502,120.56 = 85,429.32/x
3. Step 3: Cross multiply
   334,747.32x = 502,120.56 × 85,429.32
4. Step 4: Simplify right side
   334,747.32x = 42,895,817,998.82
5. Step 5: Solve for x
   x = 42,895,817,998.82/334,747.32
6. Step 6: Final answer
   x = 128,143.87