Finding the Fourth Proportional to 111,417.90, 153,770.31 and 63,660.30

Step by Step Solution

1. Step 1: Write the proportion equation
   111,417.90 : 153,770.31 = 63,660.30 : x
2. Step 2: Convert to fraction form
   111,417.90/153,770.31 = 63,660.30/x
3. Step 3: Cross multiply
   111,417.90x = 153,770.31 × 63,660.30
4. Step 4: Simplify right side
   111,417.90x = 9,789,064,065.69
5. Step 5: Solve for x
   x = 9,789,064,065.69/111,417.90
6. Step 6: Final answer
   x = 87,858.99