Finding the Fourth Proportional to 78,431.30, 117,580.82 and 34,024.57

Step by Step Solution

1. Step 1: Write the proportion equation
   78,431.30 : 117,580.82 = 34,024.57 : x
2. Step 2: Convert to fraction form
   78,431.30/117,580.82 = 34,024.57/x
3. Step 3: Cross multiply
   78,431.30x = 117,580.82 × 34,024.57
4. Step 4: Simplify right side
   78,431.30x = 4,000,636,631.86
5. Step 5: Solve for x
   x = 4,000,636,631.86/78,431.30
6. Step 6: Final answer
   x = 51,008.17