Finding the Fourth Proportional to 151,568.72, 209,140.68 and 84,501.20

Step by Step Solution

1. Step 1: Write the proportion equation
   151,568.72 : 209,140.68 = 84,501.20 : x
2. Step 2: Convert to fraction form
   151,568.72/209,140.68 = 84,501.20/x
3. Step 3: Cross multiply
   151,568.72x = 209,140.68 × 84,501.20
4. Step 4: Simplify right side
   151,568.72x = 17,672,638,428.82
5. Step 5: Solve for x
   x = 17,672,638,428.82/151,568.72
6. Step 6: Final answer
   x = 116,598.19