Finding the Fourth Proportional to 66,461.02, 91,715.55 and 38,166.91

Step by Step Solution

1. Step 1: Write the proportion equation
   66,461.02 : 91,715.55 = 38,166.91 : x
2. Step 2: Convert to fraction form
   66,461.02/91,715.55 = 38,166.91/x
3. Step 3: Cross multiply
   66,461.02x = 91,715.55 × 38,166.91
4. Step 4: Simplify right side
   66,461.02x = 3,500,499,142.45
5. Step 5: Solve for x
   x = 3,500,499,142.45/66,461.02
6. Step 6: Final answer
   x = 52,669.96