Finding the Fourth Proportional to 98,841.94, 136,404.21 and 56,404.42

Step by Step Solution

1. Step 1: Write the proportion equation
   98,841.94 : 136,404.21 = 56,404.42 : x
2. Step 2: Convert to fraction form
   98,841.94/136,404.21 = 56,404.42/x
3. Step 3: Cross multiply
   98,841.94x = 136,404.21 × 56,404.42
4. Step 4: Simplify right side
   98,841.94x = 7,693,800,350.61
5. Step 5: Solve for x
   x = 7,693,800,350.61/98,841.94
6. Step 6: Final answer
   x = 77,839.43