Finding the Fourth Proportional to 118,407.51, 163,404.72 and 64,695.87

Step by Step Solution

1. Step 1: Write the proportion equation
   118,407.51 : 163,404.72 = 64,695.87 : x
2. Step 2: Convert to fraction form
   118,407.51/163,404.72 = 64,695.87/x
3. Step 3: Cross multiply
   118,407.51x = 163,404.72 × 64,695.87
4. Step 4: Simplify right side
   118,407.51x = 10,571,610,522.51
5. Step 5: Solve for x
   x = 10,571,610,522.51/118,407.51
6. Step 6: Final answer
   x = 89,281.59