Finding the Fourth Proportional to 72,593.84, 108,871.32 and 19,990.82

Step by Step Solution

1. Step 1: Write the proportion equation
   72,593.84 : 108,871.32 = 19,990.82 : x
2. Step 2: Convert to fraction form
   72,593.84/108,871.32 = 19,990.82/x
3. Step 3: Cross multiply
   72,593.84x = 108,871.32 × 19,990.82
4. Step 4: Simplify right side
   72,593.84x = 2,176,426,961.28
5. Step 5: Solve for x
   x = 2,176,426,961.28/72,593.84
6. Step 6: Final answer
   x = 29,980.88