Finding the Fourth Proportional to 141,223.50, 194,905.71 and 81,607.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,223.50 : 194,905.71 = 81,607.50 : x
2. Step 2: Convert to fraction form
   141,223.50/194,905.71 = 81,607.50/x
3. Step 3: Cross multiply
   141,223.50x = 194,905.71 × 81,607.50
4. Step 4: Simplify right side
   141,223.50x = 15,905,767,728.83
5. Step 5: Solve for x
   x = 15,905,767,728.83/141,223.50
6. Step 6: Final answer
   x = 112,628.34