Finding the Fourth Proportional to 108,824.18, 163,061.30 and 91,328.18

Step by Step Solution

1. Step 1: Write the proportion equation
   108,824.18 : 163,061.30 = 91,328.18 : x
2. Step 2: Convert to fraction form
   108,824.18/163,061.30 = 91,328.18/x
3. Step 3: Cross multiply
   108,824.18x = 163,061.30 × 91,328.18
4. Step 4: Simplify right side
   108,824.18x = 14,892,091,170.45
5. Step 5: Solve for x
   x = 14,892,091,170.45/108,824.18
6. Step 6: Final answer
   x = 136,845.43