Finding the Fourth Proportional to 120,160.82, 165,821.18 and 71,784.72

Step by Step Solution

1. Step 1: Write the proportion equation
   120,160.82 : 165,821.18 = 71,784.72 : x
2. Step 2: Convert to fraction form
   120,160.82/165,821.18 = 71,784.72/x
3. Step 3: Cross multiply
   120,160.82x = 165,821.18 × 71,784.72
4. Step 4: Simplify right side
   120,160.82x = 11,903,426,617.45
5. Step 5: Solve for x
   x = 11,903,426,617.45/120,160.82
6. Step 6: Final answer
   x = 99,062.46