Finding the Fourth Proportional to 111,513.48, 153,883.98 and 61,213.56

Step by Step Solution

1. Step 1: Write the proportion equation
   111,513.48 : 153,883.98 = 61,213.56 : x
2. Step 2: Convert to fraction form
   111,513.48/153,883.98 = 61,213.56/x
3. Step 3: Cross multiply
   111,513.48x = 153,883.98 × 61,213.56
4. Step 4: Simplify right side
   111,513.48x = 9,419,786,242.77
5. Step 5: Solve for x
   x = 9,419,786,242.77/111,513.48
6. Step 6: Final answer
   x = 84,472.18