Finding the Fourth Proportional to 100,196.42, 149,410.48 and 99,296.55

Step by Step Solution

1. Step 1: Write the proportion equation
   100,196.42 : 149,410.48 = 99,296.55 : x
2. Step 2: Convert to fraction form
   100,196.42/149,410.48 = 99,296.55/x
3. Step 3: Cross multiply
   100,196.42x = 149,410.48 × 99,296.55
4. Step 4: Simplify right side
   100,196.42x = 14,835,945,509.89
5. Step 5: Solve for x
   x = 14,835,945,509.89/100,196.42
6. Step 6: Final answer
   x = 148,068.63