Finding the Fourth Proportional to 429,443.76, 592,687.06 and 259,679.10

Step by Step Solution

1. Step 1: Write the proportion equation
   429,443.76 : 592,687.06 = 259,679.10 : x
2. Step 2: Convert to fraction form
   429,443.76/592,687.06 = 259,679.10/x
3. Step 3: Cross multiply
   429,443.76x = 592,687.06 × 259,679.10
4. Step 4: Simplify right side
   429,443.76x = 153,908,442,322.45
5. Step 5: Solve for x
   x = 153,908,442,322.45/429,443.76
6. Step 6: Final answer
   x = 358,390.22