Finding the Fourth Proportional to 76,246.27, 105,209.88 and 42,253.12

Step by Step Solution

1. Step 1: Write the proportion equation
   76,246.27 : 105,209.88 = 42,253.12 : x
2. Step 2: Convert to fraction form
   76,246.27/105,209.88 = 42,253.12/x
3. Step 3: Cross multiply
   76,246.27x = 105,209.88 × 42,253.12
4. Step 4: Simplify right side
   76,246.27x = 4,445,445,684.83
5. Step 5: Solve for x
   x = 4,445,445,684.83/76,246.27
6. Step 6: Final answer
   x = 58,303.78