Finding the Fourth Proportional to 759,499.32, 1,138,578.50 and 286,516.82

Step by Step Solution

1. Step 1: Write the proportion equation
   759,499.32 : 1,138,578.50 = 286,516.82 : x
2. Step 2: Convert to fraction form
   759,499.32/1,138,578.50 = 286,516.82/x
3. Step 3: Cross multiply
   759,499.32x = 1,138,578.50 × 286,516.82
4. Step 4: Simplify right side
   759,499.32x = 326,221,891,140.37
5. Step 5: Solve for x
   x = 326,221,891,140.37/759,499.32
6. Step 6: Final answer
   x = 429,522.30