Finding the Fourth Proportional to 210,081.90, 315,074.79 and 60,321

Step by Step Solution

1. Step 1: Write the proportion equation
   210,081.90 : 315,074.79 = 60,321 : x
2. Step 2: Convert to fraction form
   210,081.90/315,074.79 = 60,321/x
3. Step 3: Cross multiply
   210,081.90x = 315,074.79 × 60,321
4. Step 4: Simplify right side
   210,081.90x = 19,005,626,407.59
5. Step 5: Solve for x
   x = 19,005,626,407.59/210,081.90
6. Step 6: Final answer
   x = 90,467.70