Finding the Fourth Proportional to 105,134.69, 145,084.88 and 64,832.33

Step by Step Solution

1. Step 1: Write the proportion equation
   105,134.69 : 145,084.88 = 64,832.33 : x
2. Step 2: Convert to fraction form
   105,134.69/145,084.88 = 64,832.33/x
3. Step 3: Cross multiply
   105,134.69x = 145,084.88 × 64,832.33
4. Step 4: Simplify right side
   105,134.69x = 9,406,191,342.96
5. Step 5: Solve for x
   x = 9,406,191,342.96/105,134.69
6. Step 6: Final answer
   x = 89,468.01