Finding the Fourth Proportional to 77,066.18, 115,598.73 and 39,636.69

Step by Step Solution

1. Step 1: Write the proportion equation
   77,066.18 : 115,598.73 = 39,636.69 : x
2. Step 2: Convert to fraction form
   77,066.18/115,598.73 = 39,636.69/x
3. Step 3: Cross multiply
   77,066.18x = 115,598.73 × 39,636.69
4. Step 4: Simplify right side
   77,066.18x = 4,581,951,025.40
5. Step 5: Solve for x
   x = 4,581,951,025.40/77,066.18
6. Step 6: Final answer
   x = 59,454.76