Finding the Fourth Proportional to 262,345.86, 391,472.63 and 234,071.55

Step by Step Solution

1. Step 1: Write the proportion equation
   262,345.86 : 391,472.63 = 234,071.55 : x
2. Step 2: Convert to fraction form
   262,345.86/391,472.63 = 234,071.55/x
3. Step 3: Cross multiply
   262,345.86x = 391,472.63 × 234,071.55
4. Step 4: Simplify right side
   262,345.86x = 91,632,604,116.32
5. Step 5: Solve for x
   x = 91,632,604,116.32/262,345.86
6. Step 6: Final answer
   x = 349,281.69