Finding the Fourth Proportional to 105,090.83, 145,028.54 and 59,775.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,090.83 : 145,028.54 = 59,775.33 : x
2. Step 2: Convert to fraction form
   105,090.83/145,028.54 = 59,775.33/x
3. Step 3: Cross multiply
   105,090.83x = 145,028.54 × 59,775.33
4. Step 4: Simplify right side
   105,090.83x = 8,669,128,837.92
5. Step 5: Solve for x
   x = 8,669,128,837.92/105,090.83
6. Step 6: Final answer
   x = 82,491.77