Finding the Fourth Proportional to 72,281, 99,638.43 and 62,155.19

Step by Step Solution

1. Step 1: Write the proportion equation
   72,281 : 99,638.43 = 62,155.19 : x
2. Step 2: Convert to fraction form
   72,281/99,638.43 = 62,155.19/x
3. Step 3: Cross multiply
   72,281x = 99,638.43 × 62,155.19
4. Step 4: Simplify right side
   72,281x = 6,193,045,547.95
5. Step 5: Solve for x
   x = 6,193,045,547.95/72,281
6. Step 6: Final answer
   x = 85,680.13