Finding the Fourth Proportional to 291,100.77, 401,686.56 and 163,773.63

Step by Step Solution

1. Step 1: Write the proportion equation
   291,100.77 : 401,686.56 = 163,773.63 : x
2. Step 2: Convert to fraction form
   291,100.77/401,686.56 = 163,773.63/x
3. Step 3: Cross multiply
   291,100.77x = 401,686.56 × 163,773.63
4. Step 4: Simplify right side
   291,100.77x = 65,785,666,053.41
5. Step 5: Solve for x
   x = 65,785,666,053.41/291,100.77
6. Step 6: Final answer
   x = 225,989.32