Finding the Fourth Proportional to 151,621.16, 209,274.72 and 103,303.04

Step by Step Solution

1. Step 1: Write the proportion equation
   151,621.16 : 209,274.72 = 103,303.04 : x
2. Step 2: Convert to fraction form
   151,621.16/209,274.72 = 103,303.04/x
3. Step 3: Cross multiply
   151,621.16x = 209,274.72 × 103,303.04
4. Step 4: Simplify right side
   151,621.16x = 21,618,714,771.15
5. Step 5: Solve for x
   x = 21,618,714,771.15/151,621.16
6. Step 6: Final answer
   x = 142,583.76