Finding the Fourth Proportional to 92,570.76, 138,870.72 and 33,420.96

Step by Step Solution

1. Step 1: Write the proportion equation
   92,570.76 : 138,870.72 = 33,420.96 : x
2. Step 2: Convert to fraction form
   92,570.76/138,870.72 = 33,420.96/x
3. Step 3: Cross multiply
   92,570.76x = 138,870.72 × 33,420.96
4. Step 4: Simplify right side
   92,570.76x = 4,641,192,778.29
5. Step 5: Solve for x
   x = 4,641,192,778.29/92,570.76
6. Step 6: Final answer
   x = 50,136.70