Finding the Fourth Proportional to 78,701.76, 108,608.52 and 42,891.81

Step by Step Solution

1. Step 1: Write the proportion equation
   78,701.76 : 108,608.52 = 42,891.81 : x
2. Step 2: Convert to fraction form
   78,701.76/108,608.52 = 42,891.81/x
3. Step 3: Cross multiply
   78,701.76x = 108,608.52 × 42,891.81
4. Step 4: Simplify right side
   78,701.76x = 4,658,416,004.22
5. Step 5: Solve for x
   x = 4,658,416,004.22/78,701.76
6. Step 6: Final answer
   x = 59,190.75