Finding the Fourth Proportional to 215,206.86, 296,987.73 and 118,411.98

Step by Step Solution

1. Step 1: Write the proportion equation
   215,206.86 : 296,987.73 = 118,411.98 : x
2. Step 2: Convert to fraction form
   215,206.86/296,987.73 = 118,411.98/x
3. Step 3: Cross multiply
   215,206.86x = 296,987.73 × 118,411.98
4. Step 4: Simplify right side
   215,206.86x = 35,166,905,145.01
5. Step 5: Solve for x
   x = 35,166,905,145.01/215,206.86
6. Step 6: Final answer
   x = 163,409.78