Finding the Fourth Proportional to 75,130.55, 103,682.94 and 42,870.42

Step by Step Solution

1. Step 1: Write the proportion equation
   75,130.55 : 103,682.94 = 42,870.42 : x
2. Step 2: Convert to fraction form
   75,130.55/103,682.94 = 42,870.42/x
3. Step 3: Cross multiply
   75,130.55x = 103,682.94 × 42,870.42
4. Step 4: Simplify right side
   75,130.55x = 4,444,931,184.63
5. Step 5: Solve for x
   x = 4,444,931,184.63/75,130.55
6. Step 6: Final answer
   x = 59,162.77