Finding the Fourth Proportional to 57,856,886.72, 86,780,015.58 and 19,518,732.98

Step by Step Solution

1. Step 1: Write the proportion equation
   57,856,886.72 : 86,780,015.58 = 19,518,732.98 : x
2. Step 2: Convert to fraction form
   57,856,886.72/86,780,015.58 = 19,518,732.98/x
3. Step 3: Cross multiply
   57,856,886.72x = 86,780,015.58 × 19,518,732.98
4. Step 4: Simplify right side
   57,856,886.72x = 1,693,835,952,070,980
5. Step 5: Solve for x
   x = 1,693,835,952,070,980/57,856,886.72
6. Step 6: Final answer
   x = 29,276,306.56