Finding the Fourth Proportional to 112,870.86, 155,763.54 and 61,888.24

Step by Step Solution

1. Step 1: Write the proportion equation
   112,870.86 : 155,763.54 = 61,888.24 : x
2. Step 2: Convert to fraction form
   112,870.86/155,763.54 = 61,888.24/x
3. Step 3: Cross multiply
   112,870.86x = 155,763.54 × 61,888.24
4. Step 4: Simplify right side
   112,870.86x = 9,639,931,346.77
5. Step 5: Solve for x
   x = 9,639,931,346.77/112,870.86
6. Step 6: Final answer
   x = 85,406.73