Finding the Fourth Proportional to 58,620.72, 80,903.70 and 33,128.16

Step by Step Solution

1. Step 1: Write the proportion equation
   58,620.72 : 80,903.70 = 33,128.16 : x
2. Step 2: Convert to fraction form
   58,620.72/80,903.70 = 33,128.16/x
3. Step 3: Cross multiply
   58,620.72x = 80,903.70 × 33,128.16
4. Step 4: Simplify right side
   58,620.72x = 2,680,190,718.19
5. Step 5: Solve for x
   x = 2,680,190,718.19/58,620.72
6. Step 6: Final answer
   x = 45,720.88