Finding the Fourth Proportional to 256,322.83, 384,521.01 and 78,844.81

Step by Step Solution

1. Step 1: Write the proportion equation
   256,322.83 : 384,521.01 = 78,844.81 : x
2. Step 2: Convert to fraction form
   256,322.83/384,521.01 = 78,844.81/x
3. Step 3: Cross multiply
   256,322.83x = 384,521.01 × 78,844.81
4. Step 4: Simplify right side
   256,322.83x = 30,317,483,657.63
5. Step 5: Solve for x
   x = 30,317,483,657.63/256,322.83
6. Step 6: Final answer
   x = 118,278.52