Finding the Fourth Proportional to 105,525, 145,628.24 and 57,778.74

Step by Step Solution

1. Step 1: Write the proportion equation
   105,525 : 145,628.24 = 57,778.74 : x
2. Step 2: Convert to fraction form
   105,525/145,628.24 = 57,778.74/x
3. Step 3: Cross multiply
   105,525x = 145,628.24 × 57,778.74
4. Step 4: Simplify right side
   105,525x = 8,414,215,926.72
5. Step 5: Solve for x
   x = 8,414,215,926.72/105,525
6. Step 6: Final answer
   x = 79,736.71