Finding the Fourth Proportional to 99,168.32, 148,039.12 and 84,975.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,168.32 : 148,039.12 = 84,975.50 : x
2. Step 2: Convert to fraction form
   99,168.32/148,039.12 = 84,975.50/x
3. Step 3: Cross multiply
   99,168.32x = 148,039.12 × 84,975.50
4. Step 4: Simplify right side
   99,168.32x = 12,579,698,241.56
5. Step 5: Solve for x
   x = 12,579,698,241.56/99,168.32
6. Step 6: Final answer
   x = 126,851.99