Finding the Fourth Proportional to 83,645.76, 115,427.52 and 45,920.64

Step by Step Solution

1. Step 1: Write the proportion equation
   83,645.76 : 115,427.52 = 45,920.64 : x
2. Step 2: Convert to fraction form
   83,645.76/115,427.52 = 45,920.64/x
3. Step 3: Cross multiply
   83,645.76x = 115,427.52 × 45,920.64
4. Step 4: Simplify right side
   83,645.76x = 5,300,505,592.01
5. Step 5: Solve for x
   x = 5,300,505,592.01/83,645.76
6. Step 6: Final answer
   x = 63,368.49