Finding the Fourth Proportional to 413,484.39, 620,114.56 and 113,893.72

Step by Step Solution

1. Step 1: Write the proportion equation
   413,484.39 : 620,114.56 = 113,893.72 : x
2. Step 2: Convert to fraction form
   413,484.39/620,114.56 = 113,893.72/x
3. Step 3: Cross multiply
   413,484.39x = 620,114.56 × 113,893.72
4. Step 4: Simplify right side
   413,484.39x = 70,627,154,064.56
5. Step 5: Solve for x
   x = 70,627,154,064.56/413,484.39
6. Step 6: Final answer
   x = 170,809.72