Finding the Fourth Proportional to 71,377.90, 107,066.92 and 21,457.98

Step by Step Solution

1. Step 1: Write the proportion equation
   71,377.90 : 107,066.92 = 21,457.98 : x
2. Step 2: Convert to fraction form
   71,377.90/107,066.92 = 21,457.98/x
3. Step 3: Cross multiply
   71,377.90x = 107,066.92 × 21,457.98
4. Step 4: Simplify right side
   71,377.90x = 2,297,439,828.02
5. Step 5: Solve for x
   x = 2,297,439,828.02/71,377.90
6. Step 6: Final answer
   x = 32,186.99