Finding the Fourth Proportional to 78,661.06, 108,551.01 and 42,851.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,661.06 : 108,551.01 = 42,851.50 : x
2. Step 2: Convert to fraction form
   78,661.06/108,551.01 = 42,851.50/x
3. Step 3: Cross multiply
   78,661.06x = 108,551.01 × 42,851.50
4. Step 4: Simplify right side
   78,661.06x = 4,651,573,605.02
5. Step 5: Solve for x
   x = 4,651,573,605.02/78,661.06
6. Step 6: Final answer
   x = 59,134.39