Finding the Fourth Proportional to 142,920.01, 214,381.83 and 54,149.67

Step by Step Solution

1. Step 1: Write the proportion equation
   142,920.01 : 214,381.83 = 54,149.67 : x
2. Step 2: Convert to fraction form
   142,920.01/214,381.83 = 54,149.67/x
3. Step 3: Cross multiply
   142,920.01x = 214,381.83 × 54,149.67
4. Step 4: Simplify right side
   142,920.01x = 11,608,705,077.75
5. Step 5: Solve for x
   x = 11,608,705,077.75/142,920.01
6. Step 6: Final answer
   x = 81,225.19