Finding the Fourth Proportional to 118,697.13, 163,804.91 and 64,981.98

Step by Step Solution

1. Step 1: Write the proportion equation
   118,697.13 : 163,804.91 = 64,981.98 : x
2. Step 2: Convert to fraction form
   118,697.13/163,804.91 = 64,981.98/x
3. Step 3: Cross multiply
   118,697.13x = 163,804.91 × 64,981.98
4. Step 4: Simplify right side
   118,697.13x = 10,644,367,060.61
5. Step 5: Solve for x
   x = 10,644,367,060.61/118,697.13
6. Step 6: Final answer
   x = 89,676.70