Finding the Fourth Proportional to 127,864.58, 191,796.86 and 56,770.50

Step by Step Solution

1. Step 1: Write the proportion equation
   127,864.58 : 191,796.86 = 56,770.50 : x
2. Step 2: Convert to fraction form
   127,864.58/191,796.86 = 56,770.50/x
3. Step 3: Cross multiply
   127,864.58x = 191,796.86 × 56,770.50
4. Step 4: Simplify right side
   127,864.58x = 10,888,404,501.79
5. Step 5: Solve for x
   x = 10,888,404,501.79/127,864.58
6. Step 6: Final answer
   x = 85,155.76