Finding the Fourth Proportional to 112,714.80, 169,057.62 and 42,585

Step by Step Solution

1. Step 1: Write the proportion equation
   112,714.80 : 169,057.62 = 42,585 : x
2. Step 2: Convert to fraction form
   112,714.80/169,057.62 = 42,585/x
3. Step 3: Cross multiply
   112,714.80x = 169,057.62 × 42,585
4. Step 4: Simplify right side
   112,714.80x = 7,199,318,747.70
5. Step 5: Solve for x
   x = 7,199,318,747.70/112,714.80
6. Step 6: Final answer
   x = 63,871.99