Finding the Fourth Proportional to 75,784.03, 113,601.78 and 64,564.72

Step by Step Solution

1. Step 1: Write the proportion equation
   75,784.03 : 113,601.78 = 64,564.72 : x
2. Step 2: Convert to fraction form
   75,784.03/113,601.78 = 64,564.72/x
3. Step 3: Cross multiply
   75,784.03x = 113,601.78 × 64,564.72
4. Step 4: Simplify right side
   75,784.03x = 7,334,667,117.20
5. Step 5: Solve for x
   x = 7,334,667,117.20/75,784.03
6. Step 6: Final answer
   x = 96,783.81