Finding the Fourth Proportional to 143,064.83, 197,420.28 and 89,346.64

Step by Step Solution

1. Step 1: Write the proportion equation
   143,064.83 : 197,420.28 = 89,346.64 : x
2. Step 2: Convert to fraction form
   143,064.83/197,420.28 = 89,346.64/x
3. Step 3: Cross multiply
   143,064.83x = 197,420.28 × 89,346.64
4. Step 4: Simplify right side
   143,064.83x = 17,638,838,685.86
5. Step 5: Solve for x
   x = 17,638,838,685.86/143,064.83
6. Step 6: Final answer
   x = 123,292.63