Finding the Fourth Proportional to 215,038.99, 322,356.90 and 72,784.71

Step by Step Solution

1. Step 1: Write the proportion equation
   215,038.99 : 322,356.90 = 72,784.71 : x
2. Step 2: Convert to fraction form
   215,038.99/322,356.90 = 72,784.71/x
3. Step 3: Cross multiply
   215,038.99x = 322,356.90 × 72,784.71
4. Step 4: Simplify right side
   215,038.99x = 23,462,653,483.00
5. Step 5: Solve for x
   x = 23,462,653,483.00/215,038.99
6. Step 6: Final answer
   x = 109,108.83