Finding the Fourth Proportional to 99,064.56, 136,706.72 and 54,860.92

Step by Step Solution

1. Step 1: Write the proportion equation
   99,064.56 : 136,706.72 = 54,860.92 : x
2. Step 2: Convert to fraction form
   99,064.56/136,706.72 = 54,860.92/x
3. Step 3: Cross multiply
   99,064.56x = 136,706.72 × 54,860.92
4. Step 4: Simplify right side
   99,064.56x = 7,499,856,429.38
5. Step 5: Solve for x
   x = 7,499,856,429.38/99,064.56
6. Step 6: Final answer
   x = 75,706.76