Finding the Fourth Proportional to 99,441, 136,962.36 and 86,012.82

Step by Step Solution

1. Step 1: Write the proportion equation
   99,441 : 136,962.36 = 86,012.82 : x
2. Step 2: Convert to fraction form
   99,441/136,962.36 = 86,012.82/x
3. Step 3: Cross multiply
   99,441x = 136,962.36 × 86,012.82
4. Step 4: Simplify right side
   99,441x = 11,780,518,817.46
5. Step 5: Solve for x
   x = 11,780,518,817.46/99,441
6. Step 6: Final answer
   x = 118,467.42