Finding the Fourth Proportional to 105,667.26, 145,820.13 and 57,922.62

Step by Step Solution

1. Step 1: Write the proportion equation
   105,667.26 : 145,820.13 = 57,922.62 : x
2. Step 2: Convert to fraction form
   105,667.26/145,820.13 = 57,922.62/x
3. Step 3: Cross multiply
   105,667.26x = 145,820.13 × 57,922.62
4. Step 4: Simplify right side
   105,667.26x = 8,446,283,978.34
5. Step 5: Solve for x
   x = 8,446,283,978.34/105,667.26
6. Step 6: Final answer
   x = 79,932.84