Finding the Fourth Proportional to 91,046.16, 136,654.56 and 56,054.16

Step by Step Solution

1. Step 1: Write the proportion equation
   91,046.16 : 136,654.56 = 56,054.16 : x
2. Step 2: Convert to fraction form
   91,046.16/136,654.56 = 56,054.16/x
3. Step 3: Cross multiply
   91,046.16x = 136,654.56 × 56,054.16
4. Step 4: Simplify right side
   91,046.16x = 7,660,056,570.97
5. Step 5: Solve for x
   x = 7,660,056,570.97/91,046.16
6. Step 6: Final answer
   x = 84,133.77