Finding the Fourth Proportional to 105,293.16, 145,304.82 and 57,547.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,293.16 : 145,304.82 = 57,547.08 : x
2. Step 2: Convert to fraction form
   105,293.16/145,304.82 = 57,547.08/x
3. Step 3: Cross multiply
   105,293.16x = 145,304.82 × 57,547.08
4. Step 4: Simplify right side
   105,293.16x = 8,361,868,100.93
5. Step 5: Solve for x
   x = 8,361,868,100.93/105,293.16
6. Step 6: Final answer
   x = 79,415.11