Finding the Fourth Proportional to 105,298.78, 157,924.88 and 30,402.67

Step by Step Solution

1. Step 1: Write the proportion equation
   105,298.78 : 157,924.88 = 30,402.67 : x
2. Step 2: Convert to fraction form
   105,298.78/157,924.88 = 30,402.67/x
3. Step 3: Cross multiply
   105,298.78x = 157,924.88 × 30,402.67
4. Step 4: Simplify right side
   105,298.78x = 4,801,338,011.43
5. Step 5: Solve for x
   x = 4,801,338,011.43/105,298.78
6. Step 6: Final answer
   x = 45,597.28