Finding the Fourth Proportional to 67,810.70, 101,642.16 and 57,919.98

Step by Step Solution

1. Step 1: Write the proportion equation
   67,810.70 : 101,642.16 = 57,919.98 : x
2. Step 2: Convert to fraction form
   67,810.70/101,642.16 = 57,919.98/x
3. Step 3: Cross multiply
   67,810.70x = 101,642.16 × 57,919.98
4. Step 4: Simplify right side
   67,810.70x = 5,887,111,874.36
5. Step 5: Solve for x
   x = 5,887,111,874.36/67,810.70
6. Step 6: Final answer
   x = 86,816.86