Finding the Fourth Proportional to 90,810.52, 136,173.72 and 50,256.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,810.52 : 136,173.72 = 50,256.76 : x
2. Step 2: Convert to fraction form
   90,810.52/136,173.72 = 50,256.76/x
3. Step 3: Cross multiply
   90,810.52x = 136,173.72 × 50,256.76
4. Step 4: Simplify right side
   90,810.52x = 6,843,649,964.35
5. Step 5: Solve for x
   x = 6,843,649,964.35/90,810.52
6. Step 6: Final answer
   x = 75,361.86