Finding the Fourth Proportional to 116,139.72, 174,062.71 and 66,248.03

Step by Step Solution

1. Step 1: Write the proportion equation
   116,139.72 : 174,062.71 = 66,248.03 : x
2. Step 2: Convert to fraction form
   116,139.72/174,062.71 = 66,248.03/x
3. Step 3: Cross multiply
   116,139.72x = 174,062.71 × 66,248.03
4. Step 4: Simplify right side
   116,139.72x = 11,531,311,633.96
5. Step 5: Solve for x
   x = 11,531,311,633.96/116,139.72
6. Step 6: Final answer
   x = 99,288.27