Finding the Fourth Proportional to 67,742.88, 93,530.88 and 42,288.08

Step by Step Solution

1. Step 1: Write the proportion equation
   67,742.88 : 93,530.88 = 42,288.08 : x
2. Step 2: Convert to fraction form
   67,742.88/93,530.88 = 42,288.08/x
3. Step 3: Cross multiply
   67,742.88x = 93,530.88 × 42,288.08
4. Step 4: Simplify right side
   67,742.88x = 3,955,241,335.91
5. Step 5: Solve for x
   x = 3,955,241,335.91/67,742.88
6. Step 6: Final answer
   x = 58,386.08