Finding the Fourth Proportional to 141,878,540.10, 212,817,810.15 and 141,878,540.10

Step by Step Solution

1. Step 1: Write the proportion equation
   141,878,540.10 : 212,817,810.15 = 141,878,540.10 : x
2. Step 2: Convert to fraction form
   141,878,540.10/212,817,810.15 = 141,878,540.10/x
3. Step 3: Cross multiply
   141,878,540.10x = 212,817,810.15 × 141,878,540.10
4. Step 4: Simplify right side
   141,878,540.10x = 30,194,280,211,360,960
5. Step 5: Solve for x
   x = 30,194,280,211,360,960/141,878,540.10
6. Step 6: Final answer
   x = 212,817,810.15