Finding the Fourth Proportional to 83,345.63, 125,018.51 and 21,016.13

Step by Step Solution

1. Step 1: Write the proportion equation
   83,345.63 : 125,018.51 = 21,016.13 : x
2. Step 2: Convert to fraction form
   83,345.63/125,018.51 = 21,016.13/x
3. Step 3: Cross multiply
   83,345.63x = 125,018.51 × 21,016.13
4. Step 4: Simplify right side
   83,345.63x = 2,627,404,528.39
5. Step 5: Solve for x
   x = 2,627,404,528.39/83,345.63
6. Step 6: Final answer
   x = 31,524.20