Finding the Fourth Proportional to 67,091, 92,561.98 and 40,242.20

Step by Step Solution

1. Step 1: Write the proportion equation
   67,091 : 92,561.98 = 40,242.20 : x
2. Step 2: Convert to fraction form
   67,091/92,561.98 = 40,242.20/x
3. Step 3: Cross multiply
   67,091x = 92,561.98 × 40,242.20
4. Step 4: Simplify right side
   67,091x = 3,724,897,711.56
5. Step 5: Solve for x
   x = 3,724,897,711.56/67,091
6. Step 6: Final answer
   x = 55,520.08