Finding the Fourth Proportional to 77,859.57, 107,446.18 and 42,049.59

Step by Step Solution

1. Step 1: Write the proportion equation
   77,859.57 : 107,446.18 = 42,049.59 : x
2. Step 2: Convert to fraction form
   77,859.57/107,446.18 = 42,049.59/x
3. Step 3: Cross multiply
   77,859.57x = 107,446.18 × 42,049.59
4. Step 4: Simplify right side
   77,859.57x = 4,518,067,816.07
5. Step 5: Solve for x
   x = 4,518,067,816.07/77,859.57
6. Step 6: Final answer
   x = 58,028.42