Finding the Fourth Proportional to 111,185, 153,459.12 and 70,889.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,185 : 153,459.12 = 70,889.48 : x
2. Step 2: Convert to fraction form
   111,185/153,459.12 = 70,889.48/x
3. Step 3: Cross multiply
   111,185x = 153,459.12 × 70,889.48
4. Step 4: Simplify right side
   111,185x = 10,878,637,218.06
5. Step 5: Solve for x
   x = 10,878,637,218.06/111,185
6. Step 6: Final answer
   x = 97,842.67