Finding the Fourth Proportional to 78,754.62, 108,679.32 and 42,945.30

Step by Step Solution

1. Step 1: Write the proportion equation
   78,754.62 : 108,679.32 = 42,945.30 : x
2. Step 2: Convert to fraction form
   78,754.62/108,679.32 = 42,945.30/x
3. Step 3: Cross multiply
   78,754.62x = 108,679.32 × 42,945.30
4. Step 4: Simplify right side
   78,754.62x = 4,667,266,001.20
5. Step 5: Solve for x
   x = 4,667,266,001.20/78,754.62
6. Step 6: Final answer
   x = 59,263.39