Finding the Fourth Proportional to 111,581.82, 153,985.59 and 61,281.90

Step by Step Solution

1. Step 1: Write the proportion equation
   111,581.82 : 153,985.59 = 61,281.90 : x
2. Step 2: Convert to fraction form
   111,581.82/153,985.59 = 61,281.90/x
3. Step 3: Cross multiply
   111,581.82x = 153,985.59 × 61,281.90
4. Step 4: Simplify right side
   111,581.82x = 9,436,529,527.82
5. Step 5: Solve for x
   x = 9,436,529,527.82/111,581.82
6. Step 6: Final answer
   x = 84,570.49