Finding the Fourth Proportional to 90,758.83, 136,094.10 and 54,772.37

Step by Step Solution

1. Step 1: Write the proportion equation
   90,758.83 : 136,094.10 = 54,772.37 : x
2. Step 2: Convert to fraction form
   90,758.83/136,094.10 = 54,772.37/x
3. Step 3: Cross multiply
   90,758.83x = 136,094.10 × 54,772.37
4. Step 4: Simplify right side
   90,758.83x = 7,454,196,178.55
5. Step 5: Solve for x
   x = 7,454,196,178.55/90,758.83
6. Step 6: Final answer
   x = 82,131.91