Finding the Fourth Proportional to 78,555.46, 108,406.04 and 42,745.60

Step by Step Solution

1. Step 1: Write the proportion equation
   78,555.46 : 108,406.04 = 42,745.60 : x
2. Step 2: Convert to fraction form
   78,555.46/108,406.04 = 42,745.60/x
3. Step 3: Cross multiply
   78,555.46x = 108,406.04 × 42,745.60
4. Step 4: Simplify right side
   78,555.46x = 4,633,881,223.42
5. Step 5: Solve for x
   x = 4,633,881,223.42/78,555.46
6. Step 6: Final answer
   x = 58,988.66