Finding the Fourth Proportional to 56,897, 78,517.86 and 31,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,897 : 78,517.86 = 31,746.50 : x
2. Step 2: Convert to fraction form
   56,897/78,517.86 = 31,746.50/x
3. Step 3: Cross multiply
   56,897x = 78,517.86 × 31,746.50
4. Step 4: Simplify right side
   56,897x = 2,492,667,242.49
5. Step 5: Solve for x
   x = 2,492,667,242.49/56,897
6. Step 6: Final answer
   x = 43,810.17