Finding the Fourth Proportional to 316,300.50, 474,475.02 and 91,663.98

Step by Step Solution

1. Step 1: Write the proportion equation
   316,300.50 : 474,475.02 = 91,663.98 : x
2. Step 2: Convert to fraction form
   316,300.50/474,475.02 = 91,663.98/x
3. Step 3: Cross multiply
   316,300.50x = 474,475.02 × 91,663.98
4. Step 4: Simplify right side
   316,300.50x = 43,492,268,743.78
5. Step 5: Solve for x
   x = 43,492,268,743.78/316,300.50
6. Step 6: Final answer
   x = 137,503.00