Finding the Fourth Proportional to 83,389.61, 115,077.51 and 45,149.15

Step by Step Solution

1. Step 1: Write the proportion equation
   83,389.61 : 115,077.51 = 45,149.15 : x
2. Step 2: Convert to fraction form
   83,389.61/115,077.51 = 45,149.15/x
3. Step 3: Cross multiply
   83,389.61x = 115,077.51 × 45,149.15
4. Step 4: Simplify right side
   83,389.61x = 5,195,651,791.59
5. Step 5: Solve for x
   x = 5,195,651,791.59/83,389.61
6. Step 6: Final answer
   x = 62,305.75