Finding the Fourth Proportional to 456,047.55, 683,874.50 and 140,434.29

Step by Step Solution

1. Step 1: Write the proportion equation
   456,047.55 : 683,874.50 = 140,434.29 : x
2. Step 2: Convert to fraction form
   456,047.55/683,874.50 = 140,434.29/x
3. Step 3: Cross multiply
   456,047.55x = 683,874.50 × 140,434.29
4. Step 4: Simplify right side
   456,047.55x = 96,039,429,154.43
5. Step 5: Solve for x
   x = 96,039,429,154.43/456,047.55
6. Step 6: Final answer
   x = 210,590.82