Finding the Fourth Proportional to 78,098.04, 107,775.13 and 42,288.15

Step by Step Solution

1. Step 1: Write the proportion equation
   78,098.04 : 107,775.13 = 42,288.15 : x
2. Step 2: Convert to fraction form
   78,098.04/107,775.13 = 42,288.15/x
3. Step 3: Cross multiply
   78,098.04x = 107,775.13 × 42,288.15
4. Step 4: Simplify right side
   78,098.04x = 4,557,611,057.25
5. Step 5: Solve for x
   x = 4,557,611,057.25/78,098.04
6. Step 6: Final answer
   x = 58,357.56