Finding the Fourth Proportional to 143,589.84, 215,428.68 and 73,518.72

Step by Step Solution

1. Step 1: Write the proportion equation
   143,589.84 : 215,428.68 = 73,518.72 : x
2. Step 2: Convert to fraction form
   143,589.84/215,428.68 = 73,518.72/x
3. Step 3: Cross multiply
   143,589.84x = 215,428.68 × 73,518.72
4. Step 4: Simplify right side
   143,589.84x = 15,838,040,804.89
5. Step 5: Solve for x
   x = 15,838,040,804.89/143,589.84
6. Step 6: Final answer
   x = 110,300.57