Finding the Fourth Proportional to 90,111.02, 135,078.25 and 50,149.06

Step by Step Solution

1. Step 1: Write the proportion equation
   90,111.02 : 135,078.25 = 50,149.06 : x
2. Step 2: Convert to fraction form
   90,111.02/135,078.25 = 50,149.06/x
3. Step 3: Cross multiply
   90,111.02x = 135,078.25 × 50,149.06
4. Step 4: Simplify right side
   90,111.02x = 6,774,047,263.95
5. Step 5: Solve for x
   x = 6,774,047,263.95/90,111.02
6. Step 6: Final answer
   x = 75,174.46