Finding the Fourth Proportional to 47,009.69, 64,830.89 and 31,109.93

Step by Step Solution

1. Step 1: Write the proportion equation
   47,009.69 : 64,830.89 = 31,109.93 : x
2. Step 2: Convert to fraction form
   47,009.69/64,830.89 = 31,109.93/x
3. Step 3: Cross multiply
   47,009.69x = 64,830.89 × 31,109.93
4. Step 4: Simplify right side
   47,009.69x = 2,016,884,294.19
5. Step 5: Solve for x
   x = 2,016,884,294.19/47,009.69
6. Step 6: Final answer
   x = 42,903.59