Finding the Fourth Proportional to 105,065.06, 144,978.75 and 64,796.93

Step by Step Solution

1. Step 1: Write the proportion equation
   105,065.06 : 144,978.75 = 64,796.93 : x
2. Step 2: Convert to fraction form
   105,065.06/144,978.75 = 64,796.93/x
3. Step 3: Cross multiply
   105,065.06x = 144,978.75 × 64,796.93
4. Step 4: Simplify right side
   105,065.06x = 9,394,177,915.24
5. Step 5: Solve for x
   x = 9,394,177,915.24/105,065.06
6. Step 6: Final answer
   x = 89,412.96