Finding the Fourth Proportional to 90,849.98, 136,293.18 and 31,669.76

Step by Step Solution

1. Step 1: Write the proportion equation
   90,849.98 : 136,293.18 = 31,669.76 : x
2. Step 2: Convert to fraction form
   90,849.98/136,293.18 = 31,669.76/x
3. Step 3: Cross multiply
   90,849.98x = 136,293.18 × 31,669.76
4. Step 4: Simplify right side
   90,849.98x = 4,316,372,300.24
5. Step 5: Solve for x
   x = 4,316,372,300.24/90,849.98
6. Step 6: Final answer
   x = 47,510.99