Finding the Fourth Proportional to 71,538.16, 107,377.90 and 53,706.82

Step by Step Solution

1. Step 1: Write the proportion equation
   71,538.16 : 107,377.90 = 53,706.82 : x
2. Step 2: Convert to fraction form
   71,538.16/107,377.90 = 53,706.82/x
3. Step 3: Cross multiply
   71,538.16x = 107,377.90 × 53,706.82
4. Step 4: Simplify right side
   71,538.16x = 5,766,925,547.28
5. Step 5: Solve for x
   x = 5,766,925,547.28/71,538.16
6. Step 6: Final answer
   x = 80,613.28