Finding the Fourth Proportional to 148,443.63, 204,865.16 and 81,388.59

Step by Step Solution

1. Step 1: Write the proportion equation
   148,443.63 : 204,865.16 = 81,388.59 : x
2. Step 2: Convert to fraction form
   148,443.63/204,865.16 = 81,388.59/x
3. Step 3: Cross multiply
   148,443.63x = 204,865.16 × 81,388.59
4. Step 4: Simplify right side
   148,443.63x = 16,673,686,512.52
5. Step 5: Solve for x
   x = 16,673,686,512.52/148,443.63
6. Step 6: Final answer
   x = 112,323.35