Finding the Fourth Proportional to 105,700.14, 145,865.15 and 57,953.37

Step by Step Solution

1. Step 1: Write the proportion equation
   105,700.14 : 145,865.15 = 57,953.37 : x
2. Step 2: Convert to fraction form
   105,700.14/145,865.15 = 57,953.37/x
3. Step 3: Cross multiply
   105,700.14x = 145,865.15 × 57,953.37
4. Step 4: Simplify right side
   105,700.14x = 8,453,377,808.60
5. Step 5: Solve for x
   x = 8,453,377,808.60/105,700.14
6. Step 6: Final answer
   x = 79,975.09