Finding the Fourth Proportional to 219,196.18, 328,756.47 and 61,387.12

Step by Step Solution

1. Step 1: Write the proportion equation
   219,196.18 : 328,756.47 = 61,387.12 : x
2. Step 2: Convert to fraction form
   219,196.18/328,756.47 = 61,387.12/x
3. Step 3: Cross multiply
   219,196.18x = 328,756.47 × 61,387.12
4. Step 4: Simplify right side
   219,196.18x = 20,181,412,874.67
5. Step 5: Solve for x
   x = 20,181,412,874.67/219,196.18
6. Step 6: Final answer
   x = 92,070.09