Finding the Fourth Proportional to 90,050.98, 135,034.06 and 52,621.87

Step by Step Solution

1. Step 1: Write the proportion equation
   90,050.98 : 135,034.06 = 52,621.87 : x
2. Step 2: Convert to fraction form
   90,050.98/135,034.06 = 52,621.87/x
3. Step 3: Cross multiply
   90,050.98x = 135,034.06 × 52,621.87
4. Step 4: Simplify right side
   90,050.98x = 7,105,744,750.89
5. Step 5: Solve for x
   x = 7,105,744,750.89/90,050.98
6. Step 6: Final answer
   x = 78,908.02