Finding the Fourth Proportional to 118,058.94, 162,916.56 and 64,342.80

Step by Step Solution

1. Step 1: Write the proportion equation
   118,058.94 : 162,916.56 = 64,342.80 : x
2. Step 2: Convert to fraction form
   118,058.94/162,916.56 = 64,342.80/x
3. Step 3: Cross multiply
   118,058.94x = 162,916.56 × 64,342.80
4. Step 4: Simplify right side
   118,058.94x = 10,482,507,636.77
5. Step 5: Solve for x
   x = 10,482,507,636.77/118,058.94
6. Step 6: Final answer
   x = 88,790.46