Finding the Fourth Proportional to 58,613.27, 87,919.61 and 21,173.31

Step by Step Solution

1. Step 1: Write the proportion equation
   58,613.27 : 87,919.61 = 21,173.31 : x
2. Step 2: Convert to fraction form
   58,613.27/87,919.61 = 21,173.31/x
3. Step 3: Cross multiply
   58,613.27x = 87,919.61 × 21,173.31
4. Step 4: Simplify right side
   58,613.27x = 1,861,549,051.74
5. Step 5: Solve for x
   x = 1,861,549,051.74/58,613.27
6. Step 6: Final answer
   x = 31,759.86