Finding the Fourth Proportional to 112,081.70, 167,626.82 and 99,688.70

Step by Step Solution

1. Step 1: Write the proportion equation
   112,081.70 : 167,626.82 = 99,688.70 : x
2. Step 2: Convert to fraction form
   112,081.70/167,626.82 = 99,688.70/x
3. Step 3: Cross multiply
   112,081.70x = 167,626.82 × 99,688.70
4. Step 4: Simplify right side
   112,081.70x = 16,710,499,770.93
5. Step 5: Solve for x
   x = 16,710,499,770.93/112,081.70
6. Step 6: Final answer
   x = 149,092.13