Finding the Fourth Proportional to 82,120.32, 113,344.18 and 53,389.98

Step by Step Solution

1. Step 1: Write the proportion equation
   82,120.32 : 113,344.18 = 53,389.98 : x
2. Step 2: Convert to fraction form
   82,120.32/113,344.18 = 53,389.98/x
3. Step 3: Cross multiply
   82,120.32x = 113,344.18 × 53,389.98
4. Step 4: Simplify right side
   82,120.32x = 6,051,443,503.32
5. Step 5: Solve for x
   x = 6,051,443,503.32/82,120.32
6. Step 6: Final answer
   x = 73,689.96