Finding the Fourth Proportional to 112,988.31, 169,483.47 and 28,748.55

Step by Step Solution

1. Step 1: Write the proportion equation
   112,988.31 : 169,483.47 = 28,748.55 : x
2. Step 2: Convert to fraction form
   112,988.31/169,483.47 = 28,748.55/x
3. Step 3: Cross multiply
   112,988.31x = 169,483.47 × 28,748.55
4. Step 4: Simplify right side
   112,988.31x = 4,872,404,011.47
5. Step 5: Solve for x
   x = 4,872,404,011.47/112,988.31
6. Step 6: Final answer
   x = 43,123.08