Finding the Fourth Proportional to 83,385.91, 115,072.58 and 45,145.45

Step by Step Solution

1. Step 1: Write the proportion equation
   83,385.91 : 115,072.58 = 45,145.45 : x
2. Step 2: Convert to fraction form
   83,385.91/115,072.58 = 45,145.45/x
3. Step 3: Cross multiply
   83,385.91x = 115,072.58 × 45,145.45
4. Step 4: Simplify right side
   83,385.91x = 5,195,003,406.76
5. Step 5: Solve for x
   x = 5,195,003,406.76/83,385.91
6. Step 6: Final answer
   x = 62,300.73