Finding the Fourth Proportional to 76,335.32, 105,344.42 and 42,342.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,335.32 : 105,344.42 = 42,342.69 : x
2. Step 2: Convert to fraction form
   76,335.32/105,344.42 = 42,342.69/x
3. Step 3: Cross multiply
   76,335.32x = 105,344.42 × 42,342.69
4. Step 4: Simplify right side
   76,335.32x = 4,460,566,488.51
5. Step 5: Solve for x
   x = 4,460,566,488.51/76,335.32
6. Step 6: Final answer
   x = 58,433.85