Finding the Fourth Proportional to 78,607.73, 108,478.15 and 42,797.75

Step by Step Solution

1. Step 1: Write the proportion equation
   78,607.73 : 108,478.15 = 42,797.75 : x
2. Step 2: Convert to fraction form
   78,607.73/108,478.15 = 42,797.75/x
3. Step 3: Cross multiply
   78,607.73x = 108,478.15 × 42,797.75
4. Step 4: Simplify right side
   78,607.73x = 4,642,620,094.78
5. Step 5: Solve for x
   x = 4,642,620,094.78/78,607.73
6. Step 6: Final answer
   x = 59,060.60