Finding the Fourth Proportional to 77,456.07, 116,171.96 and 21,300.39

Step by Step Solution

1. Step 1: Write the proportion equation
   77,456.07 : 116,171.96 = 21,300.39 : x
2. Step 2: Convert to fraction form
   77,456.07/116,171.96 = 21,300.39/x
3. Step 3: Cross multiply
   77,456.07x = 116,171.96 × 21,300.39
4. Step 4: Simplify right side
   77,456.07x = 2,474,507,948.56
5. Step 5: Solve for x
   x = 2,474,507,948.56/77,456.07
6. Step 6: Final answer
   x = 31,947.24