Finding the Fourth Proportional to 120,802.72, 166,791.15 and 75,501.06

Step by Step Solution

1. Step 1: Write the proportion equation
   120,802.72 : 166,791.15 = 75,501.06 : x
2. Step 2: Convert to fraction form
   120,802.72/166,791.15 = 75,501.06/x
3. Step 3: Cross multiply
   120,802.72x = 166,791.15 × 75,501.06
4. Step 4: Simplify right side
   120,802.72x = 12,592,908,936.35
5. Step 5: Solve for x
   x = 12,592,908,936.35/120,802.72
6. Step 6: Final answer
   x = 104,243.59