Finding the Fourth Proportional to 77,744.16, 116,616.27 and 42,905.25

Step by Step Solution

1. Step 1: Write the proportion equation
   77,744.16 : 116,616.27 = 42,905.25 : x
2. Step 2: Convert to fraction form
   77,744.16/116,616.27 = 42,905.25/x
3. Step 3: Cross multiply
   77,744.16x = 116,616.27 × 42,905.25
4. Step 4: Simplify right side
   77,744.16x = 5,003,450,218.42
5. Step 5: Solve for x
   x = 5,003,450,218.42/77,744.16
6. Step 6: Final answer
   x = 64,357.89