Finding the Fourth Proportional to 100,946.18, 151,402.78 and 71,274.06

Step by Step Solution

1. Step 1: Write the proportion equation
   100,946.18 : 151,402.78 = 71,274.06 : x
2. Step 2: Convert to fraction form
   100,946.18/151,402.78 = 71,274.06/x
3. Step 3: Cross multiply
   100,946.18x = 151,402.78 × 71,274.06
4. Step 4: Simplify right side
   100,946.18x = 10,791,090,825.89
5. Step 5: Solve for x
   x = 10,791,090,825.89/100,946.18
6. Step 6: Final answer
   x = 106,899.45