Finding the Fourth Proportional to 866,585,139.52, 1,195,887,492.52 and 495,315,142.52

Step by Step Solution

1. Step 1: Write the proportion equation
   866,585,139.52 : 1,195,887,492.52 = 495,315,142.52 : x
2. Step 2: Convert to fraction form
   866,585,139.52/1,195,887,492.52 = 495,315,142.52/x
3. Step 3: Cross multiply
   866,585,139.52x = 1,195,887,492.52 × 495,315,142.52
4. Step 4: Simplify right side
   866,585,139.52x = 592,341,183,795,429,248
5. Step 5: Solve for x
   x = 592,341,183,795,429,248/866,585,139.52
6. Step 6: Final answer
   x = 683,534,896.67