Finding the Fourth Proportional to 76,323.40, 105,331.40 and 42,342.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,323.40 : 105,331.40 = 42,342.69 : x
2. Step 2: Convert to fraction form
   76,323.40/105,331.40 = 42,342.69/x
3. Step 3: Cross multiply
   76,323.40x = 105,331.40 × 42,342.69
4. Step 4: Simplify right side
   76,323.40x = 4,460,014,817.47
5. Step 5: Solve for x
   x = 4,460,014,817.47/76,323.40
6. Step 6: Final answer
   x = 58,435.75