Finding the Fourth Proportional to 334,741.32, 502,111.56 and 85,423.32

Step by Step Solution

1. Step 1: Write the proportion equation
   334,741.32 : 502,111.56 = 85,423.32 : x
2. Step 2: Convert to fraction form
   334,741.32/502,111.56 = 85,423.32/x
3. Step 3: Cross multiply
   334,741.32x = 502,111.56 × 85,423.32
4. Step 4: Simplify right side
   334,741.32x = 42,892,036,465.58
5. Step 5: Solve for x
   x = 42,892,036,465.58/334,741.32
6. Step 6: Final answer
   x = 128,134.87