Finding the Fourth Proportional to 78,555.56, 108,407.03 and 42,745.32

Step by Step Solution

1. Step 1: Write the proportion equation
   78,555.56 : 108,407.03 = 42,745.32 : x
2. Step 2: Convert to fraction form
   78,555.56/108,407.03 = 42,745.32/x
3. Step 3: Cross multiply
   78,555.56x = 108,407.03 × 42,745.32
4. Step 4: Simplify right side
   78,555.56x = 4,633,892,973.87
5. Step 5: Solve for x
   x = 4,633,892,973.87/78,555.56
6. Step 6: Final answer
   x = 58,988.74