Finding the Fourth Proportional to 155,884.57, 215,018.15 and 107,488.49

Step by Step Solution

1. Step 1: Write the proportion equation
   155,884.57 : 215,018.15 = 107,488.49 : x
2. Step 2: Convert to fraction form
   155,884.57/215,018.15 = 107,488.49/x
3. Step 3: Cross multiply
   155,884.57x = 215,018.15 × 107,488.49
4. Step 4: Simplify right side
   155,884.57x = 23,111,974,653.56
5. Step 5: Solve for x
   x = 23,111,974,653.56/155,884.57
6. Step 6: Final answer
   x = 148,263.39