Finding the Fourth Proportional to 78,475.37, 108,294.80 and 42,665.06

Step by Step Solution

1. Step 1: Write the proportion equation
   78,475.37 : 108,294.80 = 42,665.06 : x
2. Step 2: Convert to fraction form
   78,475.37/108,294.80 = 42,665.06/x
3. Step 3: Cross multiply
   78,475.37x = 108,294.80 × 42,665.06
4. Step 4: Simplify right side
   78,475.37x = 4,620,404,139.69
5. Step 5: Solve for x
   x = 4,620,404,139.69/78,475.37
6. Step 6: Final answer
   x = 58,877.13