Finding the Fourth Proportional to 76,242.18, 105,212.61 and 42,250.35

Step by Step Solution

1. Step 1: Write the proportion equation
   76,242.18 : 105,212.61 = 42,250.35 : x
2. Step 2: Convert to fraction form
   76,242.18/105,212.61 = 42,250.35/x
3. Step 3: Cross multiply
   76,242.18x = 105,212.61 × 42,250.35
4. Step 4: Simplify right side
   76,242.18x = 4,445,269,596.91
5. Step 5: Solve for x
   x = 4,445,269,596.91/76,242.18
6. Step 6: Final answer
   x = 58,304.60