Finding the Fourth Proportional to 78,706.84, 108,612.20 and 42,896.04

Step by Step Solution

1. Step 1: Write the proportion equation
   78,706.84 : 108,612.20 = 42,896.04 : x
2. Step 2: Convert to fraction form
   78,706.84/108,612.20 = 42,896.04/x
3. Step 3: Cross multiply
   78,706.84x = 108,612.20 × 42,896.04
4. Step 4: Simplify right side
   78,706.84x = 4,659,033,275.69
5. Step 5: Solve for x
   x = 4,659,033,275.69/78,706.84
6. Step 6: Final answer
   x = 59,194.77