Finding the Fourth Proportional to 99,820.67, 149,738.18 and 31,426.35

Step by Step Solution

1. Step 1: Write the proportion equation
   99,820.67 : 149,738.18 = 31,426.35 : x
2. Step 2: Convert to fraction form
   99,820.67/149,738.18 = 31,426.35/x
3. Step 3: Cross multiply
   99,820.67x = 149,738.18 × 31,426.35
4. Step 4: Simplify right side
   99,820.67x = 4,705,724,295.91
5. Step 5: Solve for x
   x = 4,705,724,295.91/99,820.67
6. Step 6: Final answer
   x = 47,141.78