Finding the Fourth Proportional to 83,370.80, 115,068.72 and 56,521.94

Step by Step Solution

1. Step 1: Write the proportion equation
   83,370.80 : 115,068.72 = 56,521.94 : x
2. Step 2: Convert to fraction form
   83,370.80/115,068.72 = 56,521.94/x
3. Step 3: Cross multiply
   83,370.80x = 115,068.72 × 56,521.94
4. Step 4: Simplify right side
   83,370.80x = 6,503,907,287.72
5. Step 5: Solve for x
   x = 6,503,907,287.72/83,370.80
6. Step 6: Final answer
   x = 78,011.81