Finding the Fourth Proportional to 78,705.46, 108,610.35 and 42,894.70

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.46 : 108,610.35 = 42,894.70 : x
2. Step 2: Convert to fraction form
   78,705.46/108,610.35 = 42,894.70/x
3. Step 3: Cross multiply
   78,705.46x = 108,610.35 × 42,894.70
4. Step 4: Simplify right side
   78,705.46x = 4,658,808,380.15
5. Step 5: Solve for x
   x = 4,658,808,380.15/78,705.46
6. Step 6: Final answer
   x = 59,192.95