Finding the Fourth Proportional to 152,691.30, 228,518.55 and 134,028.90

Step by Step Solution

1. Step 1: Write the proportion equation
   152,691.30 : 228,518.55 = 134,028.90 : x
2. Step 2: Convert to fraction form
   152,691.30/228,518.55 = 134,028.90/x
3. Step 3: Cross multiply
   152,691.30x = 228,518.55 × 134,028.90
4. Step 4: Simplify right side
   152,691.30x = 30,628,089,886.10
5. Step 5: Solve for x
   x = 30,628,089,886.10/152,691.30
6. Step 6: Final answer
   x = 200,588.31