Finding the Fourth Proportional to 152,112.33, 209,896.38 and 84,120.12

Step by Step Solution

1. Step 1: Write the proportion equation
   152,112.33 : 209,896.38 = 84,120.12 : x
2. Step 2: Convert to fraction form
   152,112.33/209,896.38 = 84,120.12/x
3. Step 3: Cross multiply
   152,112.33x = 209,896.38 × 84,120.12
4. Step 4: Simplify right side
   152,112.33x = 17,656,508,673.17
5. Step 5: Solve for x
   x = 17,656,508,673.17/152,112.33
6. Step 6: Final answer
   x = 116,075.46