Finding the Fourth Proportional to 112,783.56, 155,646.48 and 64,398.59

Step by Step Solution

1. Step 1: Write the proportion equation
   112,783.56 : 155,646.48 = 64,398.59 : x
2. Step 2: Convert to fraction form
   112,783.56/155,646.48 = 64,398.59/x
3. Step 3: Cross multiply
   112,783.56x = 155,646.48 × 64,398.59
4. Step 4: Simplify right side
   112,783.56x = 10,023,413,850.46
5. Step 5: Solve for x
   x = 10,023,413,850.46/112,783.56
6. Step 6: Final answer
   x = 88,873.00