Finding the Fourth Proportional to 98,662.17, 136,171.59 and 55,654.86

Step by Step Solution

1. Step 1: Write the proportion equation
   98,662.17 : 136,171.59 = 55,654.86 : x
2. Step 2: Convert to fraction form
   98,662.17/136,171.59 = 55,654.86/x
3. Step 3: Cross multiply
   98,662.17x = 136,171.59 × 55,654.86
4. Step 4: Simplify right side
   98,662.17x = 7,578,610,777.43
5. Step 5: Solve for x
   x = 7,578,610,777.43/98,662.17
6. Step 6: Final answer
   x = 76,813.75