Finding the Fourth Proportional to 108,672.60, 151,830.60 and 108,672.60

Step by Step Solution

1. Step 1: Write the proportion equation
   108,672.60 : 151,830.60 = 108,672.60 : x
2. Step 2: Convert to fraction form
   108,672.60/151,830.60 = 108,672.60/x
3. Step 3: Cross multiply
   108,672.60x = 151,830.60 × 108,672.60
4. Step 4: Simplify right side
   108,672.60x = 16,499,826,061.56
5. Step 5: Solve for x
   x = 16,499,826,061.56/108,672.60
6. Step 6: Final answer
   x = 151,830.60