Finding the Fourth Proportional to 261,051.50, 391,577.58 and 71,513.55

Step by Step Solution

1. Step 1: Write the proportion equation
   261,051.50 : 391,577.58 = 71,513.55 : x
2. Step 2: Convert to fraction form
   261,051.50/391,577.58 = 71,513.55/x
3. Step 3: Cross multiply
   261,051.50x = 391,577.58 × 71,513.55
4. Step 4: Simplify right side
   261,051.50x = 28,003,102,846.21
5. Step 5: Solve for x
   x = 28,003,102,846.21/261,051.50
6. Step 6: Final answer
   x = 107,270.42