Finding the Fourth Proportional to 243,188.50, 364,784.37 and 76,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,188.50 : 364,784.37 = 76,976.50 : x
2. Step 2: Convert to fraction form
   243,188.50/364,784.37 = 76,976.50/x
3. Step 3: Cross multiply
   243,188.50x = 364,784.37 × 76,976.50
4. Step 4: Simplify right side
   243,188.50x = 28,079,824,057.31
5. Step 5: Solve for x
   x = 28,079,824,057.31/243,188.50
6. Step 6: Final answer
   x = 115,465.26