Finding the Fourth Proportional to 151,796.50, 209,479.29 and 84,728.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,796.50 : 209,479.29 = 84,728.50 : x
2. Step 2: Convert to fraction form
   151,796.50/209,479.29 = 84,728.50/x
3. Step 3: Cross multiply
   151,796.50x = 209,479.29 × 84,728.50
4. Step 4: Simplify right side
   151,796.50x = 17,748,866,022.77
5. Step 5: Solve for x
   x = 17,748,866,022.77/151,796.50
6. Step 6: Final answer
   x = 116,925.40