Finding the Fourth Proportional to 81,870.33, 112,981.04 and 45,570.99

Step by Step Solution

1. Step 1: Write the proportion equation
   81,870.33 : 112,981.04 = 45,570.99 : x
2. Step 2: Convert to fraction form
   81,870.33/112,981.04 = 45,570.99/x
3. Step 3: Cross multiply
   81,870.33x = 112,981.04 × 45,570.99
4. Step 4: Simplify right side
   81,870.33x = 5,148,657,844.03
5. Step 5: Solve for x
   x = 5,148,657,844.03/81,870.33
6. Step 6: Final answer
   x = 62,887.96