Finding the Fourth Proportional to 105,061.10, 157,482.30 and 57,603.20

Step by Step Solution

1. Step 1: Write the proportion equation
   105,061.10 : 157,482.30 = 57,603.20 : x
2. Step 2: Convert to fraction form
   105,061.10/157,482.30 = 57,603.20/x
3. Step 3: Cross multiply
   105,061.10x = 157,482.30 × 57,603.20
4. Step 4: Simplify right side
   105,061.10x = 9,071,484,423.36
5. Step 5: Solve for x
   x = 9,071,484,423.36/105,061.10
6. Step 6: Final answer
   x = 86,344.85