Finding the Fourth Proportional to 58,054.59, 86,855.09 and 50,978.43

Step by Step Solution

1. Step 1: Write the proportion equation
   58,054.59 : 86,855.09 = 50,978.43 : x
2. Step 2: Convert to fraction form
   58,054.59/86,855.09 = 50,978.43/x
3. Step 3: Cross multiply
   58,054.59x = 86,855.09 × 50,978.43
4. Step 4: Simplify right side
   58,054.59x = 4,427,735,870.82
5. Step 5: Solve for x
   x = 4,427,735,870.82/58,054.59
6. Step 6: Final answer
   x = 76,268.49