Finding the Fourth Proportional to 42,791,123.25, 64,184,322.27 and 31,288,378.05

Step by Step Solution

1. Step 1: Write the proportion equation
   42,791,123.25 : 64,184,322.27 = 31,288,378.05 : x
2. Step 2: Convert to fraction form
   42,791,123.25/64,184,322.27 = 31,288,378.05/x
3. Step 3: Cross multiply
   42,791,123.25x = 64,184,322.27 × 31,288,378.05
4. Step 4: Simplify right side
   42,791,123.25x = 2,008,223,340,066,794.25
5. Step 5: Solve for x
   x = 2,008,223,340,066,794.25/42,791,123.25
6. Step 6: Final answer
   x = 46,930,839.57