Finding the Fourth Proportional to 82,420.05, 113,690.93 and 52,612.05

Step by Step Solution

1. Step 1: Write the proportion equation
   82,420.05 : 113,690.93 = 52,612.05 : x
2. Step 2: Convert to fraction form
   82,420.05/113,690.93 = 52,612.05/x
3. Step 3: Cross multiply
   82,420.05x = 113,690.93 × 52,612.05
4. Step 4: Simplify right side
   82,420.05x = 5,981,512,893.71
5. Step 5: Solve for x
   x = 5,981,512,893.71/82,420.05
6. Step 6: Final answer
   x = 72,573.52