Finding the Fourth Proportional to 77,956.42, 107,579.86 and 42,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   77,956.42 : 107,579.86 = 42,146.42 : x
2. Step 2: Convert to fraction form
   77,956.42/107,579.86 = 42,146.42/x
3. Step 3: Cross multiply
   77,956.42x = 107,579.86 × 42,146.42
4. Step 4: Simplify right side
   77,956.42x = 4,534,105,859.48
5. Step 5: Solve for x
   x = 4,534,105,859.48/77,956.42
6. Step 6: Final answer
   x = 58,162.06