Finding the Fourth Proportional to 78,705.96, 108,611.04 and 42,895.20

Step by Step Solution

1. Step 1: Write the proportion equation
   78,705.96 : 108,611.04 = 42,895.20 : x
2. Step 2: Convert to fraction form
   78,705.96/108,611.04 = 42,895.20/x
3. Step 3: Cross multiply
   78,705.96x = 108,611.04 × 42,895.20
4. Step 4: Simplify right side
   78,705.96x = 4,658,892,283.01
5. Step 5: Solve for x
   x = 4,658,892,283.01/78,705.96
6. Step 6: Final answer
   x = 59,193.64