Finding the Fourth Proportional to 152,540.82, 210,273 and 107,091.30

Step by Step Solution

1. Step 1: Write the proportion equation
   152,540.82 : 210,273 = 107,091.30 : x
2. Step 2: Convert to fraction form
   152,540.82/210,273 = 107,091.30/x
3. Step 3: Cross multiply
   152,540.82x = 210,273 × 107,091.30
4. Step 4: Simplify right side
   152,540.82x = 22,518,408,924.90
5. Step 5: Solve for x
   x = 22,518,408,924.90/152,540.82
6. Step 6: Final answer
   x = 147,622.18