Finding the Fourth Proportional to 72,820.06, 100,491.69 and 42,611.18

Step by Step Solution

1. Step 1: Write the proportion equation
   72,820.06 : 100,491.69 = 42,611.18 : x
2. Step 2: Convert to fraction form
   72,820.06/100,491.69 = 42,611.18/x
3. Step 3: Cross multiply
   72,820.06x = 100,491.69 × 42,611.18
4. Step 4: Simplify right side
   72,820.06x = 4,282,069,713.69
5. Step 5: Solve for x
   x = 4,282,069,713.69/72,820.06
6. Step 6: Final answer
   x = 58,803.44