Finding the Fourth Proportional to 129,005.00, 178,020.89 and 71,648.04

Step by Step Solution

1. Step 1: Write the proportion equation
   129,005.00 : 178,020.89 = 71,648.04 : x
2. Step 2: Convert to fraction form
   129,005.00/178,020.89 = 71,648.04/x
3. Step 3: Cross multiply
   129,005.00x = 178,020.89 × 71,648.04
4. Step 4: Simplify right side
   129,005.00x = 12,754,848,425.57
5. Step 5: Solve for x
   x = 12,754,848,425.57/129,005.00
6. Step 6: Final answer
   x = 98,870.96