Finding the Fourth Proportional to 90,277.84, 135,419.92 and 42,868.56

Step by Step Solution

1. Step 1: Write the proportion equation
   90,277.84 : 135,419.92 = 42,868.56 : x
2. Step 2: Convert to fraction form
   90,277.84/135,419.92 = 42,868.56/x
3. Step 3: Cross multiply
   90,277.84x = 135,419.92 × 42,868.56
4. Step 4: Simplify right side
   90,277.84x = 5,805,256,965.72
5. Step 5: Solve for x
   x = 5,805,256,965.72/90,277.84
6. Step 6: Final answer
   x = 64,304.34