Finding the Fourth Proportional to 112,657, 155,466.80 and 70,215.50

Step by Step Solution

1. Step 1: Write the proportion equation
   112,657 : 155,466.80 = 70,215.50 : x
2. Step 2: Convert to fraction form
   112,657/155,466.80 = 70,215.50/x
3. Step 3: Cross multiply
   112,657x = 155,466.80 × 70,215.50
4. Step 4: Simplify right side
   112,657x = 10,916,179,095.40
5. Step 5: Solve for x
   x = 10,916,179,095.40/112,657
6. Step 6: Final answer
   x = 96,897.48