Finding the Fourth Proportional to 111,447.09, 153,807.59 and 63,691.18

Step by Step Solution

1. Step 1: Write the proportion equation
   111,447.09 : 153,807.59 = 63,691.18 : x
2. Step 2: Convert to fraction form
   111,447.09/153,807.59 = 63,691.18/x
3. Step 3: Cross multiply
   111,447.09x = 153,807.59 × 63,691.18
4. Step 4: Simplify right side
   111,447.09x = 9,796,186,674.77
5. Step 5: Solve for x
   x = 9,796,186,674.77/111,447.09
6. Step 6: Final answer
   x = 87,899.89