Finding the Fourth Proportional to 64,857.51, 96,641.52 and 57,783.18

Step by Step Solution

1. Step 1: Write the proportion equation
   64,857.51 : 96,641.52 = 57,783.18 : x
2. Step 2: Convert to fraction form
   64,857.51/96,641.52 = 57,783.18/x
3. Step 3: Cross multiply
   64,857.51x = 96,641.52 × 57,783.18
4. Step 4: Simplify right side
   64,857.51x = 5,584,254,345.63
5. Step 5: Solve for x
   x = 5,584,254,345.63/64,857.51
6. Step 6: Final answer
   x = 86,100.35