Finding the Fourth Proportional to 120,202.95, 165,827.94 and 72,429.15

Step by Step Solution

1. Step 1: Write the proportion equation
   120,202.95 : 165,827.94 = 72,429.15 : x
2. Step 2: Convert to fraction form
   120,202.95/165,827.94 = 72,429.15/x
3. Step 3: Cross multiply
   120,202.95x = 165,827.94 × 72,429.15
4. Step 4: Simplify right side
   120,202.95x = 12,010,776,740.45
5. Step 5: Solve for x
   x = 12,010,776,740.45/120,202.95
6. Step 6: Final answer
   x = 99,920.82