Finding the Fourth Proportional to 129,815, 179,144.72 and 70,199

Step by Step Solution

1. Step 1: Write the proportion equation
   129,815 : 179,144.72 = 70,199 : x
2. Step 2: Convert to fraction form
   129,815/179,144.72 = 70,199/x
3. Step 3: Cross multiply
   129,815x = 179,144.72 × 70,199
4. Step 4: Simplify right side
   129,815x = 12,575,780,199.28
5. Step 5: Solve for x
   x = 12,575,780,199.28/129,815
6. Step 6: Final answer
   x = 96,874.63