Finding the Fourth Proportional to 231,328.34, 346,994.98 and 81,540.72

Step by Step Solution

1. Step 1: Write the proportion equation
   231,328.34 : 346,994.98 = 81,540.72 : x
2. Step 2: Convert to fraction form
   231,328.34/346,994.98 = 81,540.72/x
3. Step 3: Cross multiply
   231,328.34x = 346,994.98 × 81,540.72
4. Step 4: Simplify right side
   231,328.34x = 28,294,220,505.59
5. Step 5: Solve for x
   x = 28,294,220,505.59/231,328.34
6. Step 6: Final answer
   x = 122,311.95