Finding the Fourth Proportional to 92,870.15, 128,208.02 and 58,913.33

Step by Step Solution

1. Step 1: Write the proportion equation
   92,870.15 : 128,208.02 = 58,913.33 : x
2. Step 2: Convert to fraction form
   92,870.15/128,208.02 = 58,913.33/x
3. Step 3: Cross multiply
   92,870.15x = 128,208.02 × 58,913.33
4. Step 4: Simplify right side
   92,870.15x = 7,553,160,455.30
5. Step 5: Solve for x
   x = 7,553,160,455.30/92,870.15
6. Step 6: Final answer
   x = 81,330.34