Finding the Fourth Proportional to 384,152.58, 530,159.88 and 212,103.72

Step by Step Solution

1. Step 1: Write the proportion equation
   384,152.58 : 530,159.88 = 212,103.72 : x
2. Step 2: Convert to fraction form
   384,152.58/530,159.88 = 212,103.72/x
3. Step 3: Cross multiply
   384,152.58x = 530,159.88 × 212,103.72
4. Step 4: Simplify right side
   384,152.58x = 112,448,882,742.75
5. Step 5: Solve for x
   x = 112,448,882,742.75/384,152.58
6. Step 6: Final answer
   x = 292,719.32