Finding the Fourth Proportional to 128,981.86, 193,547.50 and 54,095.34

Step by Step Solution

1. Step 1: Write the proportion equation
   128,981.86 : 193,547.50 = 54,095.34 : x
2. Step 2: Convert to fraction form
   128,981.86/193,547.50 = 54,095.34/x
3. Step 3: Cross multiply
   128,981.86x = 193,547.50 × 54,095.34
4. Step 4: Simplify right side
   128,981.86x = 10,470,017,818.65
5. Step 5: Solve for x
   x = 10,470,017,818.65/128,981.86
6. Step 6: Final answer
   x = 81,174.34