Finding the Fourth Proportional to 72,602.89, 108,283.31 and 63,776.05

Step by Step Solution

1. Step 1: Write the proportion equation
   72,602.89 : 108,283.31 = 63,776.05 : x
2. Step 2: Convert to fraction form
   72,602.89/108,283.31 = 63,776.05/x
3. Step 3: Cross multiply
   72,602.89x = 108,283.31 × 63,776.05
4. Step 4: Simplify right side
   72,602.89x = 6,905,881,792.73
5. Step 5: Solve for x
   x = 6,905,881,792.73/72,602.89
6. Step 6: Final answer
   x = 95,118.55