Finding the Fourth Proportional to 99,919.83, 149,150.79 and 87,308.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99,919.83 : 149,150.79 = 87,308.34 : x
2. Step 2: Convert to fraction form
   99,919.83/149,150.79 = 87,308.34/x
3. Step 3: Cross multiply
   99,919.83x = 149,150.79 × 87,308.34
4. Step 4: Simplify right side
   99,919.83x = 13,022,107,884.59
5. Step 5: Solve for x
   x = 13,022,107,884.59/99,919.83
6. Step 6: Final answer
   x = 130,325.56