Finding the Fourth Proportional to 71,667.84, 98,902.80 and 39,403.82

Step by Step Solution

1. Step 1: Write the proportion equation
   71,667.84 : 98,902.80 = 39,403.82 : x
2. Step 2: Convert to fraction form
   71,667.84/98,902.80 = 39,403.82/x
3. Step 3: Cross multiply
   71,667.84x = 98,902.80 × 39,403.82
4. Step 4: Simplify right side
   71,667.84x = 3,897,148,128.70
5. Step 5: Solve for x
   x = 3,897,148,128.70/71,667.84
6. Step 6: Final answer
   x = 54,377.92