Finding the Fourth Proportional to 90,109.34, 124,345.86 and 49,820.75

Step by Step Solution

1. Step 1: Write the proportion equation
   90,109.34 : 124,345.86 = 49,820.75 : x
2. Step 2: Convert to fraction form
   90,109.34/124,345.86 = 49,820.75/x
3. Step 3: Cross multiply
   90,109.34x = 124,345.86 × 49,820.75
4. Step 4: Simplify right side
   90,109.34x = 6,195,004,004.60
5. Step 5: Solve for x
   x = 6,195,004,004.60/90,109.34
6. Step 6: Final answer
   x = 68,749.85