Finding the Fourth Proportional to 456,427.98, 684,657.59 and 156,906

Step by Step Solution

1. Step 1: Write the proportion equation
   456,427.98 : 684,657.59 = 156,906 : x
2. Step 2: Convert to fraction form
   456,427.98/684,657.59 = 156,906/x
3. Step 3: Cross multiply
   456,427.98x = 684,657.59 × 156,906
4. Step 4: Simplify right side
   456,427.98x = 107,426,883,032.01
5. Step 5: Solve for x
   x = 107,426,883,032.01/456,427.98
6. Step 6: Final answer
   x = 235,364.37