Finding the Fourth Proportional to 78,796.85, 108,740.43 and 42,986.97

Step by Step Solution

1. Step 1: Write the proportion equation
   78,796.85 : 108,740.43 = 42,986.97 : x
2. Step 2: Convert to fraction form
   78,796.85/108,740.43 = 42,986.97/x
3. Step 3: Cross multiply
   78,796.85x = 108,740.43 × 42,986.97
4. Step 4: Simplify right side
   78,796.85x = 4,674,421,602.20
5. Step 5: Solve for x
   x = 4,674,421,602.20/78,796.85
6. Step 6: Final answer
   x = 59,322.45