Finding the Fourth Proportional to 76,243.61, 105,214.61 and 42,251.83

Step by Step Solution

1. Step 1: Write the proportion equation
   76,243.61 : 105,214.61 = 42,251.83 : x
2. Step 2: Convert to fraction form
   76,243.61/105,214.61 = 42,251.83/x
3. Step 3: Cross multiply
   76,243.61x = 105,214.61 × 42,251.83
4. Step 4: Simplify right side
   76,243.61x = 4,445,509,657.83
5. Step 5: Solve for x
   x = 4,445,509,657.83/76,243.61
6. Step 6: Final answer
   x = 58,306.65