Finding the Fourth Proportional to 420,978.06, 631,178.82 and 151,100.22

Step by Step Solution

1. Step 1: Write the proportion equation
   420,978.06 : 631,178.82 = 151,100.22 : x
2. Step 2: Convert to fraction form
   420,978.06/631,178.82 = 151,100.22/x
3. Step 3: Cross multiply
   420,978.06x = 631,178.82 × 151,100.22
4. Step 4: Simplify right side
   420,978.06x = 95,371,258,561.34
5. Step 5: Solve for x
   x = 95,371,258,561.34/420,978.06
6. Step 6: Final answer
   x = 226,546.86