Finding the Fourth Proportional to 102,830,300.71, 141,905,799.56 and 58,778,245.40

Step by Step Solution

1. Step 1: Write the proportion equation
   102,830,300.71 : 141,905,799.56 = 58,778,245.40 : x
2. Step 2: Convert to fraction form
   102,830,300.71/141,905,799.56 = 58,778,245.40/x
3. Step 3: Cross multiply
   102,830,300.71x = 141,905,799.56 × 58,778,245.40
4. Step 4: Simplify right side
   102,830,300.71x = 8,340,973,910,722,603
5. Step 5: Solve for x
   x = 8,340,973,910,722,603/102,830,300.71
6. Step 6: Final answer
   x = 81,113,969.84