Finding the Fourth Proportional to 56,662.64, 84,938.52 and 21,097.87

Step by Step Solution

1. Step 1: Write the proportion equation
   56,662.64 : 84,938.52 = 21,097.87 : x
2. Step 2: Convert to fraction form
   56,662.64/84,938.52 = 21,097.87/x
3. Step 3: Cross multiply
   56,662.64x = 84,938.52 × 21,097.87
4. Step 4: Simplify right side
   56,662.64x = 1,792,021,719.72
5. Step 5: Solve for x
   x = 1,792,021,719.72/56,662.64
6. Step 6: Final answer
   x = 31,626.16