Finding the Fourth Proportional to 78,081.32, 107,752.16 and 42,271.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,081.32 : 107,752.16 = 42,271.64 : x
2. Step 2: Convert to fraction form
   78,081.32/107,752.16 = 42,271.64/x
3. Step 3: Cross multiply
   78,081.32x = 107,752.16 × 42,271.64
4. Step 4: Simplify right side
   78,081.32x = 4,554,860,516.74
5. Step 5: Solve for x
   x = 4,554,860,516.74/78,081.32
6. Step 6: Final answer
   x = 58,334.83