Finding the Fourth Proportional to 122,075.16, 183,456.72 and 72,178.62

Step by Step Solution

1. Step 1: Write the proportion equation
   122,075.16 : 183,456.72 = 72,178.62 : x
2. Step 2: Convert to fraction form
   122,075.16/183,456.72 = 72,178.62/x
3. Step 3: Cross multiply
   122,075.16x = 183,456.72 × 72,178.62
4. Step 4: Simplify right side
   122,075.16x = 13,241,652,879.33
5. Step 5: Solve for x
   x = 13,241,652,879.33/122,075.16
6. Step 6: Final answer
   x = 108,471.31