Finding the Fourth Proportional to 129,551.94, 178,784.01 and 72,965.34

Step by Step Solution

1. Step 1: Write the proportion equation
   129,551.94 : 178,784.01 = 72,965.34 : x
2. Step 2: Convert to fraction form
   129,551.94/178,784.01 = 72,965.34/x
3. Step 3: Cross multiply
   129,551.94x = 178,784.01 × 72,965.34
4. Step 4: Simplify right side
   129,551.94x = 13,045,036,076.21
5. Step 5: Solve for x
   x = 13,045,036,076.21/129,551.94
6. Step 6: Final answer
   x = 100,693.48