Finding the Fourth Proportional to 67,072.50, 92,560.06 and 38,780.02

Step by Step Solution

1. Step 1: Write the proportion equation
   67,072.50 : 92,560.06 = 38,780.02 : x
2. Step 2: Convert to fraction form
   67,072.50/92,560.06 = 38,780.02/x
3. Step 3: Cross multiply
   67,072.50x = 92,560.06 × 38,780.02
4. Step 4: Simplify right side
   67,072.50x = 3,589,480,978.00
5. Step 5: Solve for x
   x = 3,589,480,978.00/67,072.50
6. Step 6: Final answer
   x = 53,516.43