Finding the Fourth Proportional to 99,987.56, 150,018.78 and 51,926.22

Step by Step Solution

1. Step 1: Write the proportion equation
   99,987.56 : 150,018.78 = 51,926.22 : x
2. Step 2: Convert to fraction form
   99,987.56/150,018.78 = 51,926.22/x
3. Step 3: Cross multiply
   99,987.56x = 150,018.78 × 51,926.22
4. Step 4: Simplify right side
   99,987.56x = 7,789,908,174.41
5. Step 5: Solve for x
   x = 7,789,908,174.41/99,987.56
6. Step 6: Final answer
   x = 77,908.77