Finding the Fourth Proportional to 213,608,208.42, 294,785,123.94 and 120,802,594.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,608,208.42 : 294,785,123.94 = 120,802,594.50 : x
2. Step 2: Convert to fraction form
   213,608,208.42/294,785,123.94 = 120,802,594.50/x
3. Step 3: Cross multiply
   213,608,208.42x = 294,785,123.94 × 120,802,594.50
4. Step 4: Simplify right side
   213,608,208.42x = 35,610,807,791,956,064
5. Step 5: Solve for x
   x = 35,610,807,791,956,064/213,608,208.42
6. Step 6: Final answer
   x = 166,710,858.42