Finding the Fourth Proportional to 76,400.31, 114,434.37 and 46,728.39

Step by Step Solution

1. Step 1: Write the proportion equation
   76,400.31 : 114,434.37 = 46,728.39 : x
2. Step 2: Convert to fraction form
   76,400.31/114,434.37 = 46,728.39/x
3. Step 3: Cross multiply
   76,400.31x = 114,434.37 × 46,728.39
4. Step 4: Simplify right side
   76,400.31x = 5,347,333,870.76
5. Step 5: Solve for x
   x = 5,347,333,870.76/76,400.31
6. Step 6: Final answer
   x = 69,991.00