Finding the Fourth Proportional to 58,978.80, 88,295.40 and 52,066.80

Step by Step Solution

1. Step 1: Write the proportion equation
   58,978.80 : 88,295.40 = 52,066.80 : x
2. Step 2: Convert to fraction form
   58,978.80/88,295.40 = 52,066.80/x
3. Step 3: Cross multiply
   58,978.80x = 88,295.40 × 52,066.80
4. Step 4: Simplify right side
   58,978.80x = 4,597,258,932.72
5. Step 5: Solve for x
   x = 4,597,258,932.72/58,978.80
6. Step 6: Final answer
   x = 77,947.65