Finding the Fourth Proportional to 215,432.69, 323,296.63 and 75,191.31

Step by Step Solution

1. Step 1: Write the proportion equation
   215,432.69 : 323,296.63 = 75,191.31 : x
2. Step 2: Convert to fraction form
   215,432.69/323,296.63 = 75,191.31/x
3. Step 3: Cross multiply
   215,432.69x = 323,296.63 × 75,191.31
4. Step 4: Simplify right side
   215,432.69x = 24,309,096,940.31
5. Step 5: Solve for x
   x = 24,309,096,940.31/215,432.69
6. Step 6: Final answer
   x = 112,838.48