Finding the Fourth Proportional to 77,945.10, 116,917.89 and 21,784.84

Step by Step Solution

1. Step 1: Write the proportion equation
   77,945.10 : 116,917.89 = 21,784.84 : x
2. Step 2: Convert to fraction form
   77,945.10/116,917.89 = 21,784.84/x
3. Step 3: Cross multiply
   77,945.10x = 116,917.89 × 21,784.84
4. Step 4: Simplify right side
   77,945.10x = 2,547,036,942.20
5. Step 5: Solve for x
   x = 2,547,036,942.20/77,945.10
6. Step 6: Final answer
   x = 32,677.32