Finding the Fourth Proportional to 153,016.71, 211,162.28 and 84,107.76

Step by Step Solution

1. Step 1: Write the proportion equation
   153,016.71 : 211,162.28 = 84,107.76 : x
2. Step 2: Convert to fraction form
   153,016.71/211,162.28 = 84,107.76/x
3. Step 3: Cross multiply
   153,016.71x = 211,162.28 × 84,107.76
4. Step 4: Simplify right side
   153,016.71x = 17,760,385,946.75
5. Step 5: Solve for x
   x = 17,760,385,946.75/153,016.71
6. Step 6: Final answer
   x = 116,068.28