Finding the Fourth Proportional to 111,020.72, 153,199.33 and 62,619.98

Step by Step Solution

1. Step 1: Write the proportion equation
   111,020.72 : 153,199.33 = 62,619.98 : x
2. Step 2: Convert to fraction form
   111,020.72/153,199.33 = 62,619.98/x
3. Step 3: Cross multiply
   111,020.72x = 153,199.33 × 62,619.98
4. Step 4: Simplify right side
   111,020.72x = 9,593,338,980.61
5. Step 5: Solve for x
   x = 9,593,338,980.61/111,020.72
6. Step 6: Final answer
   x = 86,410.35