Finding the Fourth Proportional to 67,499.90, 92,340.35 and 67,215.59

Step by Step Solution

1. Step 1: Write the proportion equation
   67,499.90 : 92,340.35 = 67,215.59 : x
2. Step 2: Convert to fraction form
   67,499.90/92,340.35 = 67,215.59/x
3. Step 3: Cross multiply
   67,499.90x = 92,340.35 × 67,215.59
4. Step 4: Simplify right side
   67,499.90x = 6,206,710,308.28
5. Step 5: Solve for x
   x = 6,206,710,308.28/67,499.90
6. Step 6: Final answer
   x = 91,951.41