Finding the Fourth Proportional to 43,569.60, 65,345.74 and 19,870.72

Step by Step Solution

1. Step 1: Write the proportion equation
   43,569.60 : 65,345.74 = 19,870.72 : x
2. Step 2: Convert to fraction form
   43,569.60/65,345.74 = 19,870.72/x
3. Step 3: Cross multiply
   43,569.60x = 65,345.74 × 19,870.72
4. Step 4: Simplify right side
   43,569.60x = 1,298,466,689.69
5. Step 5: Solve for x
   x = 1,298,466,689.69/43,569.60
6. Step 6: Final answer
   x = 29,802.13