Finding the Fourth Proportional to 81,971.82, 122,933.42 and 35,213.76

Step by Step Solution

1. Step 1: Write the proportion equation
   81,971.82 : 122,933.42 = 35,213.76 : x
2. Step 2: Convert to fraction form
   81,971.82/122,933.42 = 35,213.76/x
3. Step 3: Cross multiply
   81,971.82x = 122,933.42 × 35,213.76
4. Step 4: Simplify right side
   81,971.82x = 4,328,947,947.86
5. Step 5: Solve for x
   x = 4,328,947,947.86/81,971.82
6. Step 6: Final answer
   x = 52,810.20