Finding the Fourth Proportional to 106,002.61, 146,292.58 and 72,086.34

Step by Step Solution

1. Step 1: Write the proportion equation
   106,002.61 : 146,292.58 = 72,086.34 : x
2. Step 2: Convert to fraction form
   106,002.61/146,292.58 = 72,086.34/x
3. Step 3: Cross multiply
   106,002.61x = 146,292.58 × 72,086.34
4. Step 4: Simplify right side
   106,002.61x = 10,545,696,661.36
5. Step 5: Solve for x
   x = 10,545,696,661.36/106,002.61
6. Step 6: Final answer
   x = 99,485.25