Finding the Fourth Proportional to 76,382, 105,407.88 and 42,848.72

Step by Step Solution

1. Step 1: Write the proportion equation
   76,382 : 105,407.88 = 42,848.72 : x
2. Step 2: Convert to fraction form
   76,382/105,407.88 = 42,848.72/x
3. Step 3: Cross multiply
   76,382x = 105,407.88 × 42,848.72
4. Step 4: Simplify right side
   76,382x = 4,516,592,735.91
5. Step 5: Solve for x
   x = 4,516,592,735.91/76,382
6. Step 6: Final answer
   x = 59,131.64