Finding the Fourth Proportional to 55,696,291.40, 83,544,366.72 and 21,152,628.83

Step by Step Solution

1. Step 1: Write the proportion equation
   55,696,291.40 : 83,544,366.72 = 21,152,628.83 : x
2. Step 2: Convert to fraction form
   55,696,291.40/83,544,366.72 = 21,152,628.83/x
3. Step 3: Cross multiply
   55,696,291.40x = 83,544,366.72 × 21,152,628.83
4. Step 4: Simplify right side
   55,696,291.40x = 1,767,182,980,065,564.25
5. Step 5: Solve for x
   x = 1,767,182,980,065,564.25/55,696,291.40
6. Step 6: Final answer
   x = 31,728,916.52