Finding the Fourth Proportional to 105,501.58, 145,592.44 and 57,758.02

Step by Step Solution

1. Step 1: Write the proportion equation
   105,501.58 : 145,592.44 = 57,758.02 : x
2. Step 2: Convert to fraction form
   105,501.58/145,592.44 = 57,758.02/x
3. Step 3: Cross multiply
   105,501.58x = 145,592.44 × 57,758.02
4. Step 4: Simplify right side
   105,501.58x = 8,409,131,061.37
5. Step 5: Solve for x
   x = 8,409,131,061.37/105,501.58
6. Step 6: Final answer
   x = 79,706.21