Finding the Fourth Proportional to 77,561.58, 116,440.82 and 65,948.61

Step by Step Solution

1. Step 1: Write the proportion equation
   77,561.58 : 116,440.82 = 65,948.61 : x
2. Step 2: Convert to fraction form
   77,561.58/116,440.82 = 65,948.61/x
3. Step 3: Cross multiply
   77,561.58x = 116,440.82 × 65,948.61
4. Step 4: Simplify right side
   77,561.58x = 7,679,109,896.52
5. Step 5: Solve for x
   x = 7,679,109,896.52/77,561.58
6. Step 6: Final answer
   x = 99,006.62