Finding the Fourth Proportional to 76,753.20, 105,912.18 and 42,758.22

Step by Step Solution

1. Step 1: Write the proportion equation
   76,753.20 : 105,912.18 = 42,758.22 : x
2. Step 2: Convert to fraction form
   76,753.20/105,912.18 = 42,758.22/x
3. Step 3: Cross multiply
   76,753.20x = 105,912.18 × 42,758.22
4. Step 4: Simplify right side
   76,753.20x = 4,528,616,293.12
5. Step 5: Solve for x
   x = 4,528,616,293.12/76,753.20
6. Step 6: Final answer
   x = 59,002.31