Finding the Fourth Proportional to 155,654.58, 214,814.52 and 86,748.72

Step by Step Solution

1. Step 1: Write the proportion equation
   155,654.58 : 214,814.52 = 86,748.72 : x
2. Step 2: Convert to fraction form
   155,654.58/214,814.52 = 86,748.72/x
3. Step 3: Cross multiply
   155,654.58x = 214,814.52 × 86,748.72
4. Step 4: Simplify right side
   155,654.58x = 18,634,884,647.41
5. Step 5: Solve for x
   x = 18,634,884,647.41/155,654.58
6. Step 6: Final answer
   x = 119,719.48