Finding the Fourth Proportional to 99,802.86, 137,751.06 and 65,817.48

Step by Step Solution

1. Step 1: Write the proportion equation
   99,802.86 : 137,751.06 = 65,817.48 : x
2. Step 2: Convert to fraction form
   99,802.86/137,751.06 = 65,817.48/x
3. Step 3: Cross multiply
   99,802.86x = 137,751.06 × 65,817.48
4. Step 4: Simplify right side
   99,802.86x = 9,066,427,636.53
5. Step 5: Solve for x
   x = 9,066,427,636.53/99,802.86
6. Step 6: Final answer
   x = 90,843.36