Finding the Fourth Proportional to 66,061.34, 91,158.63 and 39,199.22

Step by Step Solution

1. Step 1: Write the proportion equation
   66,061.34 : 91,158.63 = 39,199.22 : x
2. Step 2: Convert to fraction form
   66,061.34/91,158.63 = 39,199.22/x
3. Step 3: Cross multiply
   66,061.34x = 91,158.63 × 39,199.22
4. Step 4: Simplify right side
   66,061.34x = 3,573,347,192.27
5. Step 5: Solve for x
   x = 3,573,347,192.27/66,061.34
6. Step 6: Final answer
   x = 54,091.35