Finding the Fourth Proportional to 78,659.84, 108,546.80 and 42,849.68

Step by Step Solution

1. Step 1: Write the proportion equation
   78,659.84 : 108,546.80 = 42,849.68 : x
2. Step 2: Convert to fraction form
   78,659.84/108,546.80 = 42,849.68/x
3. Step 3: Cross multiply
   78,659.84x = 108,546.80 × 42,849.68
4. Step 4: Simplify right side
   78,659.84x = 4,651,195,645.02
5. Step 5: Solve for x
   x = 4,651,195,645.02/78,659.84
6. Step 6: Final answer
   x = 59,130.50