Finding the Fourth Proportional to 83,686.89, 115,489.89 and 45,447.87

Step by Step Solution

1. Step 1: Write the proportion equation
   83,686.89 : 115,489.89 = 45,447.87 : x
2. Step 2: Convert to fraction form
   83,686.89/115,489.89 = 45,447.87/x
3. Step 3: Cross multiply
   83,686.89x = 115,489.89 × 45,447.87
4. Step 4: Simplify right side
   83,686.89x = 5,248,769,507.03
5. Step 5: Solve for x
   x = 5,248,769,507.03/83,686.89
6. Step 6: Final answer
   x = 62,719.14