Finding the Fourth Proportional to 108,667.74, 149,961.38 and 60,921.10

Step by Step Solution

1. Step 1: Write the proportion equation
   108,667.74 : 149,961.38 = 60,921.10 : x
2. Step 2: Convert to fraction form
   108,667.74/149,961.38 = 60,921.10/x
3. Step 3: Cross multiply
   108,667.74x = 149,961.38 × 60,921.10
4. Step 4: Simplify right side
   108,667.74x = 9,135,811,437.77
5. Step 5: Solve for x
   x = 9,135,811,437.77/108,667.74
6. Step 6: Final answer
   x = 84,071.06