Finding the Fourth Proportional to 90,965.37, 136,601.42 and 59,429.37

Step by Step Solution

1. Step 1: Write the proportion equation
   90,965.37 : 136,601.42 = 59,429.37 : x
2. Step 2: Convert to fraction form
   90,965.37/136,601.42 = 59,429.37/x
3. Step 3: Cross multiply
   90,965.37x = 136,601.42 × 59,429.37
4. Step 4: Simplify right side
   90,965.37x = 8,118,136,034.56
5. Step 5: Solve for x
   x = 8,118,136,034.56/90,965.37
6. Step 6: Final answer
   x = 89,244.25