Finding the Fourth Proportional to 86,111.51, 118,784.34 and 53,789.94

Step by Step Solution

1. Step 1: Write the proportion equation
   86,111.51 : 118,784.34 = 53,789.94 : x
2. Step 2: Convert to fraction form
   86,111.51/118,784.34 = 53,789.94/x
3. Step 3: Cross multiply
   86,111.51x = 118,784.34 × 53,789.94
4. Step 4: Simplify right side
   86,111.51x = 6,389,402,521.54
5. Step 5: Solve for x
   x = 6,389,402,521.54/86,111.51
6. Step 6: Final answer
   x = 74,199.17