Finding the Fourth Proportional to 99,820.22, 137,718.83 and 65,845.58

Step by Step Solution

1. Step 1: Write the proportion equation
   99,820.22 : 137,718.83 = 65,845.58 : x
2. Step 2: Convert to fraction form
   99,820.22/137,718.83 = 65,845.58/x
3. Step 3: Cross multiply
   99,820.22x = 137,718.83 × 65,845.58
4. Step 4: Simplify right side
   99,820.22x = 9,068,175,714.29
5. Step 5: Solve for x
   x = 9,068,175,714.29/99,820.22
6. Step 6: Final answer
   x = 90,845.08