Finding the Fourth Proportional to 78,119.34, 107,804.82 and 42,309.66

Step by Step Solution

1. Step 1: Write the proportion equation
   78,119.34 : 107,804.82 = 42,309.66 : x
2. Step 2: Convert to fraction form
   78,119.34/107,804.82 = 42,309.66/x
3. Step 3: Cross multiply
   78,119.34x = 107,804.82 × 42,309.66
4. Step 4: Simplify right side
   78,119.34x = 4,561,185,280.56
5. Step 5: Solve for x
   x = 4,561,185,280.56/78,119.34
6. Step 6: Final answer
   x = 58,387.40