Finding the Fourth Proportional to 77,956.92, 107,580.56 and 42,146.94

Step by Step Solution

1. Step 1: Write the proportion equation
   77,956.92 : 107,580.56 = 42,146.94 : x
2. Step 2: Convert to fraction form
   77,956.92/107,580.56 = 42,146.94/x
3. Step 3: Cross multiply
   77,956.92x = 107,580.56 × 42,146.94
4. Step 4: Simplify right side
   77,956.92x = 4,534,191,407.49
5. Step 5: Solve for x
   x = 4,534,191,407.49/77,956.92
6. Step 6: Final answer
   x = 58,162.78