Finding the Fourth Proportional to 105,493.82, 145,582.86 and 57,746.14

Step by Step Solution

1. Step 1: Write the proportion equation
   105,493.82 : 145,582.86 = 57,746.14 : x
2. Step 2: Convert to fraction form
   105,493.82/145,582.86 = 57,746.14/x
3. Step 3: Cross multiply
   105,493.82x = 145,582.86 × 57,746.14
4. Step 4: Simplify right side
   105,493.82x = 8,406,848,215.16
5. Step 5: Solve for x
   x = 8,406,848,215.16/105,493.82
6. Step 6: Final answer
   x = 79,690.43