Finding the Fourth Proportional to 98,846.98, 136,418.60 and 56,411.89

Step by Step Solution

1. Step 1: Write the proportion equation
   98,846.98 : 136,418.60 = 56,411.89 : x
2. Step 2: Convert to fraction form
   98,846.98/136,418.60 = 56,411.89/x
3. Step 3: Cross multiply
   98,846.98x = 136,418.60 × 56,411.89
4. Step 4: Simplify right side
   98,846.98x = 7,695,631,057.15
5. Step 5: Solve for x
   x = 7,695,631,057.15/98,846.98
6. Step 6: Final answer
   x = 77,853.98