Finding the Fourth Proportional to 118,131.93, 163,018.98 and 64,417.95

Step by Step Solution

1. Step 1: Write the proportion equation
   118,131.93 : 163,018.98 = 64,417.95 : x
2. Step 2: Convert to fraction form
   118,131.93/163,018.98 = 64,417.95/x
3. Step 3: Cross multiply
   118,131.93x = 163,018.98 × 64,417.95
4. Step 4: Simplify right side
   118,131.93x = 10,501,348,502.69
5. Step 5: Solve for x
   x = 10,501,348,502.69/118,131.93
6. Step 6: Final answer
   x = 88,895.09