Finding the Fourth Proportional to 83,686.95, 115,488.89 and 45,961.20

Step by Step Solution

1. Step 1: Write the proportion equation
   83,686.95 : 115,488.89 = 45,961.20 : x
2. Step 2: Convert to fraction form
   83,686.95/115,488.89 = 45,961.20/x
3. Step 3: Cross multiply
   83,686.95x = 115,488.89 × 45,961.20
4. Step 4: Simplify right side
   83,686.95x = 5,308,007,971.07
5. Step 5: Solve for x
   x = 5,308,007,971.07/83,686.95
6. Step 6: Final answer
   x = 63,426.95