Finding the Fourth Proportional to 103,667.20, 143,062.28 and 61,225.63

Step by Step Solution

1. Step 1: Write the proportion equation
   103,667.20 : 143,062.28 = 61,225.63 : x
2. Step 2: Convert to fraction form
   103,667.20/143,062.28 = 61,225.63/x
3. Step 3: Cross multiply
   103,667.20x = 143,062.28 × 61,225.63
4. Step 4: Simplify right side
   103,667.20x = 8,759,078,222.24
5. Step 5: Solve for x
   x = 8,759,078,222.24/103,667.20
6. Step 6: Final answer
   x = 84,492.28