Finding the Fourth Proportional to 78,115.24, 107,799.06 and 42,305.56

Step by Step Solution

1. Step 1: Write the proportion equation
   78,115.24 : 107,799.06 = 42,305.56 : x
2. Step 2: Convert to fraction form
   78,115.24/107,799.06 = 42,305.56/x
3. Step 3: Cross multiply
   78,115.24x = 107,799.06 × 42,305.56
4. Step 4: Simplify right side
   78,115.24x = 4,560,499,600.77
5. Step 5: Solve for x
   x = 4,560,499,600.77/78,115.24
6. Step 6: Final answer
   x = 58,381.69