Finding the Fourth Proportional to 141,486, 195,250.80 and 81,870

Step by Step Solution

1. Step 1: Write the proportion equation
   141,486 : 195,250.80 = 81,870 : x
2. Step 2: Convert to fraction form
   141,486/195,250.80 = 81,870/x
3. Step 3: Cross multiply
   141,486x = 195,250.80 × 81,870
4. Step 4: Simplify right side
   141,486x = 15,985,182,996
5. Step 5: Solve for x
   x = 15,985,182,996/141,486
6. Step 6: Final answer
   x = 112,980.67