Finding the Fourth Proportional to 111,186, 153,460.50 and 70,890.48

Step by Step Solution

1. Step 1: Write the proportion equation
   111,186 : 153,460.50 = 70,890.48 : x
2. Step 2: Convert to fraction form
   111,186/153,460.50 = 70,890.48/x
3. Step 3: Cross multiply
   111,186x = 153,460.50 × 70,890.48
4. Step 4: Simplify right side
   111,186x = 10,878,888,506.04
5. Step 5: Solve for x
   x = 10,878,888,506.04/111,186
6. Step 6: Final answer
   x = 97,844.05