Finding the Fourth Proportional to 111,091.48, 153,302.43 and 63,360.21

Step by Step Solution

1. Step 1: Write the proportion equation
   111,091.48 : 153,302.43 = 63,360.21 : x
2. Step 2: Convert to fraction form
   111,091.48/153,302.43 = 63,360.21/x
3. Step 3: Cross multiply
   111,091.48x = 153,302.43 × 63,360.21
4. Step 4: Simplify right side
   111,091.48x = 9,713,274,158.31
5. Step 5: Solve for x
   x = 9,713,274,158.31/111,091.48
6. Step 6: Final answer
   x = 87,434.92