Finding the Fourth Proportional to 105,189.33, 145,173.69 and 59,250.47

Step by Step Solution

1. Step 1: Write the proportion equation
   105,189.33 : 145,173.69 = 59,250.47 : x
2. Step 2: Convert to fraction form
   105,189.33/145,173.69 = 59,250.47/x
3. Step 3: Cross multiply
   105,189.33x = 145,173.69 × 59,250.47
4. Step 4: Simplify right side
   105,189.33x = 8,601,609,364.13
5. Step 5: Solve for x
   x = 8,601,609,364.13/105,189.33
6. Step 6: Final answer
   x = 81,772.64