Finding the Fourth Proportional to 108,210.06, 149,320.17 and 60,456.78

Step by Step Solution

1. Step 1: Write the proportion equation
   108,210.06 : 149,320.17 = 60,456.78 : x
2. Step 2: Convert to fraction form
   108,210.06/149,320.17 = 60,456.78/x
3. Step 3: Cross multiply
   108,210.06x = 149,320.17 × 60,456.78
4. Step 4: Simplify right side
   108,210.06x = 9,027,416,667.25
5. Step 5: Solve for x
   x = 9,027,416,667.25/108,210.06
6. Step 6: Final answer
   x = 83,424.93