Finding the Fourth Proportional to 105,308.16, 145,325.56 and 57,562.08

Step by Step Solution

1. Step 1: Write the proportion equation
   105,308.16 : 145,325.56 = 57,562.08 : x
2. Step 2: Convert to fraction form
   105,308.16/145,325.56 = 57,562.08/x
3. Step 3: Cross multiply
   105,308.16x = 145,325.56 × 57,562.08
4. Step 4: Simplify right side
   105,308.16x = 8,365,241,510.76
5. Step 5: Solve for x
   x = 8,365,241,510.76/105,308.16
6. Step 6: Final answer
   x = 79,435.83