Finding the Fourth Proportional to 144,045.30, 215,549.55 and 97,389.30

Step by Step Solution

1. Step 1: Write the proportion equation
   144,045.30 : 215,549.55 = 97,389.30 : x
2. Step 2: Convert to fraction form
   144,045.30/215,549.55 = 97,389.30/x
3. Step 3: Cross multiply
   144,045.30x = 215,549.55 × 97,389.30
4. Step 4: Simplify right side
   144,045.30x = 20,992,219,789.82
5. Step 5: Solve for x
   x = 20,992,219,789.82/144,045.30
6. Step 6: Final answer
   x = 145,733.46