Finding the Fourth Proportional to 72,461.58, 108,680.76 and 19,858.86

Step by Step Solution

1. Step 1: Write the proportion equation
   72,461.58 : 108,680.76 = 19,858.86 : x
2. Step 2: Convert to fraction form
   72,461.58/108,680.76 = 19,858.86/x
3. Step 3: Cross multiply
   72,461.58x = 108,680.76 × 19,858.86
4. Step 4: Simplify right side
   72,461.58x = 2,158,275,997.53
5. Step 5: Solve for x
   x = 2,158,275,997.53/72,461.58
6. Step 6: Final answer
   x = 29,785.11