Finding the Fourth Proportional to 103,654.72, 155,281.65 and 86,814.82

Step by Step Solution

1. Step 1: Write the proportion equation
   103,654.72 : 155,281.65 = 86,814.82 : x
2. Step 2: Convert to fraction form
   103,654.72/155,281.65 = 86,814.82/x
3. Step 3: Cross multiply
   103,654.72x = 155,281.65 × 86,814.82
4. Step 4: Simplify right side
   103,654.72x = 13,480,748,494.05
5. Step 5: Solve for x
   x = 13,480,748,494.05/103,654.72
6. Step 6: Final answer
   x = 130,054.36