Finding the Fourth Proportional to 78,303.15, 108,058.63 and 42,493.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,303.15 : 108,058.63 = 42,493.15 : x
2. Step 2: Convert to fraction form
   78,303.15/108,058.63 = 42,493.15/x
3. Step 3: Cross multiply
   78,303.15x = 108,058.63 × 42,493.15
4. Step 4: Simplify right side
   78,303.15x = 4,591,751,573.38
5. Step 5: Solve for x
   x = 4,591,751,573.38/78,303.15
6. Step 6: Final answer
   x = 58,640.70