Finding the Fourth Proportional to 31,139,071.48, 42,971,747.58 and 17,201,385.40

Step by Step Solution

1. Step 1: Write the proportion equation
   31,139,071.48 : 42,971,747.58 = 17,201,385.40 : x
2. Step 2: Convert to fraction form
   31,139,071.48/42,971,747.58 = 17,201,385.40/x
3. Step 3: Cross multiply
   31,139,071.48x = 42,971,747.58 × 17,201,385.40
4. Step 4: Simplify right side
   31,139,071.48x = 739,173,591,435,097.25
5. Step 5: Solve for x
   x = 739,173,591,435,097.25/31,139,071.48
6. Step 6: Final answer
   x = 23,737,817.36