Finding the Fourth Proportional to 77,958.72, 116,886.24 and 42,914.88

Step by Step Solution

1. Step 1: Write the proportion equation
   77,958.72 : 116,886.24 = 42,914.88 : x
2. Step 2: Convert to fraction form
   77,958.72/116,886.24 = 42,914.88/x
3. Step 3: Cross multiply
   77,958.72x = 116,886.24 × 42,914.88
4. Step 4: Simplify right side
   77,958.72x = 5,016,158,963.25
5. Step 5: Solve for x
   x = 5,016,158,963.25/77,958.72
6. Step 6: Final answer
   x = 64,343.78