Finding the Fourth Proportional to 99,496.35, 149,244.66 and 81,929.34

Step by Step Solution

1. Step 1: Write the proportion equation
   99,496.35 : 149,244.66 = 81,929.34 : x
2. Step 2: Convert to fraction form
   99,496.35/149,244.66 = 81,929.34/x
3. Step 3: Cross multiply
   99,496.35x = 149,244.66 × 81,929.34
4. Step 4: Simplify right side
   99,496.35x = 12,227,516,492.32
5. Step 5: Solve for x
   x = 12,227,516,492.32/99,496.35
6. Step 6: Final answer
   x = 122,894.12