Finding the Fourth Proportional to 57,213,185.31, 78,953,639.02 and 31,107,703.07

Step by Step Solution

1. Step 1: Write the proportion equation
   57,213,185.31 : 78,953,639.02 = 31,107,703.07 : x
2. Step 2: Convert to fraction form
   57,213,185.31/78,953,639.02 = 31,107,703.07/x
3. Step 3: Cross multiply
   57,213,185.31x = 78,953,639.02 × 31,107,703.07
4. Step 4: Simplify right side
   57,213,185.31x = 2,456,066,359,049,740.50
5. Step 5: Solve for x
   x = 2,456,066,359,049,740.50/57,213,185.31
6. Step 6: Final answer
   x = 42,928,327.55