Finding the Fourth Proportional to 78,432.18, 108,161.91 and 51,597.42

Step by Step Solution

1. Step 1: Write the proportion equation
   78,432.18 : 108,161.91 = 51,597.42 : x
2. Step 2: Convert to fraction form
   78,432.18/108,161.91 = 51,597.42/x
3. Step 3: Cross multiply
   78,432.18x = 108,161.91 × 51,597.42
4. Step 4: Simplify right side
   78,432.18x = 5,580,875,498.27
5. Step 5: Solve for x
   x = 5,580,875,498.27/78,432.18
6. Step 6: Final answer
   x = 71,155.43