Finding the Fourth Proportional to 105,189.05, 145,174.61 and 59,858.21

Step by Step Solution

1. Step 1: Write the proportion equation
   105,189.05 : 145,174.61 = 59,858.21 : x
2. Step 2: Convert to fraction form
   105,189.05/145,174.61 = 59,858.21/x
3. Step 3: Cross multiply
   105,189.05x = 145,174.61 × 59,858.21
4. Step 4: Simplify right side
   105,189.05x = 8,689,892,292.05
5. Step 5: Solve for x
   x = 8,689,892,292.05/105,189.05
6. Step 6: Final answer
   x = 82,612.14