Finding the Fourth Proportional to 384,124.48, 530,091.89 and 212,042.56

Step by Step Solution

1. Step 1: Write the proportion equation
   384,124.48 : 530,091.89 = 212,042.56 : x
2. Step 2: Convert to fraction form
   384,124.48/530,091.89 = 212,042.56/x
3. Step 3: Cross multiply
   384,124.48x = 530,091.89 × 212,042.56
4. Step 4: Simplify right side
   384,124.48x = 112,402,041,987.22
5. Step 5: Solve for x
   x = 112,402,041,987.22/384,124.48
6. Step 6: Final answer
   x = 292,618.80