Finding the Fourth Proportional to 78,275.37, 108,020.33 and 42,465.64

Step by Step Solution

1. Step 1: Write the proportion equation
   78,275.37 : 108,020.33 = 42,465.64 : x
2. Step 2: Convert to fraction form
   78,275.37/108,020.33 = 42,465.64/x
3. Step 3: Cross multiply
   78,275.37x = 108,020.33 × 42,465.64
4. Step 4: Simplify right side
   78,275.37x = 4,587,152,123.33
5. Step 5: Solve for x
   x = 4,587,152,123.33/78,275.37
6. Step 6: Final answer
   x = 58,602.76