Finding the Fourth Proportional to 106,699.55, 160,047.50 and 31,819.91

Step by Step Solution

1. Step 1: Write the proportion equation
   106,699.55 : 160,047.50 = 31,819.91 : x
2. Step 2: Convert to fraction form
   106,699.55/160,047.50 = 31,819.91/x
3. Step 3: Cross multiply
   106,699.55x = 160,047.50 × 31,819.91
4. Step 4: Simplify right side
   106,699.55x = 5,092,696,086.39
5. Step 5: Solve for x
   x = 5,092,696,086.39/106,699.55
6. Step 6: Final answer
   x = 47,729.31