Finding the Fourth Proportional to 67,290.72, 92,859.84 and 42,154.08

Step by Step Solution

1. Step 1: Write the proportion equation
   67,290.72 : 92,859.84 = 42,154.08 : x
2. Step 2: Convert to fraction form
   67,290.72/92,859.84 = 42,154.08/x
3. Step 3: Cross multiply
   67,290.72x = 92,859.84 × 42,154.08
4. Step 4: Simplify right side
   67,290.72x = 3,914,421,124.15
5. Step 5: Solve for x
   x = 3,914,421,124.15/67,290.72
6. Step 6: Final answer
   x = 58,171.78