Finding the Fourth Proportional to 76,309.88, 105,311.04 and 42,316.08

Step by Step Solution

1. Step 1: Write the proportion equation
   76,309.88 : 105,311.04 = 42,316.08 : x
2. Step 2: Convert to fraction form
   76,309.88/105,311.04 = 42,316.08/x
3. Step 3: Cross multiply
   76,309.88x = 105,311.04 × 42,316.08
4. Step 4: Simplify right side
   76,309.88x = 4,456,350,393.52
5. Step 5: Solve for x
   x = 4,456,350,393.52/76,309.88
6. Step 6: Final answer
   x = 58,398.08