Finding the Fourth Proportional to 52,312.07, 72,196.71 and 31,091.15

Step by Step Solution

1. Step 1: Write the proportion equation
   52,312.07 : 72,196.71 = 31,091.15 : x
2. Step 2: Convert to fraction form
   52,312.07/72,196.71 = 31,091.15/x
3. Step 3: Cross multiply
   52,312.07x = 72,196.71 × 31,091.15
4. Step 4: Simplify right side
   52,312.07x = 2,244,678,740.12
5. Step 5: Solve for x
   x = 2,244,678,740.12/52,312.07
6. Step 6: Final answer
   x = 42,909.38