Finding the Fourth Proportional to 151,678.65, 209,316.28 and 83,695.57

Step by Step Solution

1. Step 1: Write the proportion equation
   151,678.65 : 209,316.28 = 83,695.57 : x
2. Step 2: Convert to fraction form
   151,678.65/209,316.28 = 83,695.57/x
3. Step 3: Cross multiply
   151,678.65x = 209,316.28 × 83,695.57
4. Step 4: Simplify right side
   151,678.65x = 17,518,843,899.82
5. Step 5: Solve for x
   x = 17,518,843,899.82/151,678.65
6. Step 6: Final answer
   x = 115,499.74