Finding the Fourth Proportional to 111,569.27, 153,943.93 and 66,261.47

Step by Step Solution

1. Step 1: Write the proportion equation
   111,569.27 : 153,943.93 = 66,261.47 : x
2. Step 2: Convert to fraction form
   111,569.27/153,943.93 = 66,261.47/x
3. Step 3: Cross multiply
   111,569.27x = 153,943.93 × 66,261.47
4. Step 4: Simplify right side
   111,569.27x = 10,200,551,099.38
5. Step 5: Solve for x
   x = 10,200,551,099.38/111,569.27
6. Step 6: Final answer
   x = 91,427.96