Finding the Fourth Proportional to 141,538.30, 195,327.54 and 81,120.53

Step by Step Solution

1. Step 1: Write the proportion equation
   141,538.30 : 195,327.54 = 81,120.53 : x
2. Step 2: Convert to fraction form
   141,538.30/195,327.54 = 81,120.53/x
3. Step 3: Cross multiply
   141,538.30x = 195,327.54 × 81,120.53
4. Step 4: Simplify right side
   141,538.30x = 15,845,074,056.72
5. Step 5: Solve for x
   x = 15,845,074,056.72/141,538.30
6. Step 6: Final answer
   x = 111,949.02