Finding the Fourth Proportional to 113,547.12, 156,659.76 and 64,480.56

Step by Step Solution

1. Step 1: Write the proportion equation
   113,547.12 : 156,659.76 = 64,480.56 : x
2. Step 2: Convert to fraction form
   113,547.12/156,659.76 = 64,480.56/x
3. Step 3: Cross multiply
   113,547.12x = 156,659.76 × 64,480.56
4. Step 4: Simplify right side
   113,547.12x = 10,101,509,054.27
5. Step 5: Solve for x
   x = 10,101,509,054.27/113,547.12
6. Step 6: Final answer
   x = 88,963.15