Finding the Fourth Proportional to 208,840.02, 288,196.83 and 113,346.78

Step by Step Solution

1. Step 1: Write the proportion equation
   208,840.02 : 288,196.83 = 113,346.78 : x
2. Step 2: Convert to fraction form
   208,840.02/288,196.83 = 113,346.78/x
3. Step 3: Cross multiply
   208,840.02x = 288,196.83 × 113,346.78
4. Step 4: Simplify right side
   208,840.02x = 32,666,182,686.71
5. Step 5: Solve for x
   x = 32,666,182,686.71/208,840.02
6. Step 6: Final answer
   x = 156,417.26