Finding the Fourth Proportional to 91,873.32, 126,784.58 and 57,903.74

Step by Step Solution

1. Step 1: Write the proportion equation
   91,873.32 : 126,784.58 = 57,903.74 : x
2. Step 2: Convert to fraction form
   91,873.32/126,784.58 = 57,903.74/x
3. Step 3: Cross multiply
   91,873.32x = 126,784.58 × 57,903.74
4. Step 4: Simplify right side
   91,873.32x = 7,341,300,432.89
5. Step 5: Solve for x
   x = 7,341,300,432.89/91,873.32
6. Step 6: Final answer
   x = 79,906.77